Discover TDD by example - Evaluating an expression by Marcel Popescu.
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Overview: Test-driven design can be daunting at first. This book presents a moderately complex task - write a program that can read a mathematical expression like 2 + 3 * 5 and return its result. The author explains each step with both tests and production code until the program can handle decimal numbers, multiple levels of parentheses and even symbols (like in x + 3).This is a code-heavy, hands-on book; just reading it without writing the code yourself might not provide the full benefit.
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After spending years working in the corporate world, Marcel Popescu finally decided to pursue a lifelong passion for writing. They currently reside in a quiet suburb where they spend most of their time outlining new stories, reading extensively, and occasionally attempting to bake.
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Will be looking for more from this author.
Andrew DavisDecember 17, 2024
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
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Nancy WrightSeptember 22, 2024
A very satisfying read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Definitely recommend it if you like this genre.
Steven HarrisSeptember 09, 2024
A solid read. I liked the main character, though some of the side plots were just okay. Not bad at all.
Carol EvansAugust 20, 2025
Really enjoyed this one. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
George HillAugust 29, 2025
Honestly one of the better books I've read lately. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Joseph RiveraMay 07, 2024
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Margaret AdamsNovember 27, 2025
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Patricia FloresOctober 10, 2025
Such a great read. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Betty ParkerDecember 05, 2024
Honestly one of the better books I've read lately. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
Thomas HillJune 03, 2024
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. A solid 5/5 for me.
Edward RodriguezNovember 01, 2024
Such a great read. I loved how the story unfolded. It kept me guessing without being too confusing. Glad I picked this up.
Carol MitchellDecember 03, 2024
Took me a few chapters to get into it, but it was worth it. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Not bad at all.
Charles PhillipsMarch 09, 2024
Good, but not quite perfect. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Not bad at all.
Nicholas ParkerJuly 19, 2024
Glad someone recommended this to me. I loved how the story unfolded. It kept me guessing without being too confusing. Worth the time and money.
Matthew MartinFebruary 22, 2025
I have mixed feelings about this one. It felt a bit repetitive in the middle. Could have been shorter. It's fine if you have nothing else to read.
Susan SmithAugust 29, 2024
Pretty good overall. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
Elizabeth WhiteJanuary 29, 2024
Really enjoyed this one. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Worth the time and money.
Susan WhiteAugust 17, 2025
I was pleasantly surprised. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Patricia CarterNovember 20, 2024
Glad someone recommended this to me. I loved how the story unfolded. It kept me guessing without being too confusing. Definitely recommend it if you like this genre.
Kevin CruzOctober 29, 2025
I was pleasantly surprised. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Worth the time and money.
William MillerMay 26, 2025
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Linda HarrisMarch 27, 2025
I was pleasantly surprised. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Worth the time and money.
Charles RobinsonNovember 06, 2024
Glad someone recommended this to me. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Would probably read it again at some point.
Kenneth AdamsJuly 07, 2024
Glad someone recommended this to me. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Rebecca MitchellFebruary 14, 2024
Good, but not quite perfect. The middle dragged a tiny bit, but the ending totally made up for it. A solid 4 stars from me.
Rebecca ParkerMay 14, 2025
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
Carol EvansMay 29, 2024
I was pleasantly surprised. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Elizabeth TorresAugust 10, 2024
A solid read. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
Nancy WrightDecember 14, 2025
Pretty good overall. I liked the main character, though some of the side plots were just okay. Still a good book.
Andrew WalkerAugust 01, 2024
I liked it for the most part. I liked the main character, though some of the side plots were just okay. Still a good book.
Mary FloresOctober 22, 2024
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. Not bad at all.
Linda MartinezFebruary 19, 2024
A solid read. The middle dragged a tiny bit, but the ending totally made up for it. A solid 4 stars from me.
Matthew TaylorSeptember 14, 2024
An average read for me. It had some good moments, but the overall plot felt a bit disjointed in the second half. Just right down the middle.
Stephanie LopezDecember 15, 2025
I was pleasantly surprised. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Jessica ScottJune 14, 2025
I liked it for the most part. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Kimberly WrightApril 28, 2024
I have mixed feelings about this one. It felt a bit repetitive in the middle. Could have been shorter. Just right down the middle.
Sandra MooreFebruary 09, 2025
Pretty good overall. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. A solid 4 stars from me.
Joseph ReyesApril 26, 2025
It was just alright. It felt a bit repetitive in the middle. Could have been shorter. Might work better for someone else, just wasn't completely for me.
Andrew CampbellOctober 06, 2025
Finished it in a couple of days. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Definitely recommend it if you like this genre.
Susan SmithAugust 31, 2024
Finished it in a couple of days. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Robert MartinMay 16, 2024
A very satisfying read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. A solid 5/5 for me.
William MillerAugust 26, 2024
Really enjoyed this one. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Worth the time and money.
Edward ReyesJanuary 08, 2024
Finished it in a couple of days. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Thomas LewisDecember 11, 2025
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. Enjoyable weekend read.
Karen RodriguezJanuary 10, 2025
Glad someone recommended this to me. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Would probably read it again at some point.
Thomas HallMay 02, 2025
Pretty good overall. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Carol MillerMay 01, 2024
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. Not bad at all.
Barbara HillNovember 02, 2025
Pretty good overall. I liked the main character, though some of the side plots were just okay. Enjoyable weekend read.
Sandra MooreSeptember 29, 2024
I have mixed feelings about this one. It felt a bit repetitive in the middle. Could have been shorter. Just right down the middle.
Barbara WalkerNovember 10, 2024
A solid read. I liked the main character, though some of the side plots were just okay. I'd probably recommend it to a friend.
Sharon CruzMay 20, 2025
Honestly one of the better books I've read lately. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Matthew PhillipsMarch 04, 2024
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. Still a good book.
James AdamsNovember 20, 2025
Glad someone recommended this to me. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Would probably read it again at some point.
Jacob DavisJuly 15, 2025
A very satisfying read. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Mark CollinsJune 14, 2024
I was pleasantly surprised. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Carol GarciaJanuary 24, 2024
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Jessica ScottFebruary 14, 2025
Really enjoyed this one. I loved how the story unfolded. It kept me guessing without being too confusing. Definitely recommend it if you like this genre.
Kenneth GomezMay 12, 2024
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. Enjoyable weekend read.
Patricia MartinezDecember 10, 2025
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
Joseph WrightOctober 26, 2024
Finished it in a couple of days. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
Donald AdamsAugust 14, 2025
It was just alright. The writing was fine, but I didn't feel very connected to the characters. They felt a bit flat. Just right down the middle.
Sarah AllenNovember 25, 2024
Such a great read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Glad I picked this up.
Christopher WhiteMay 22, 2024
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Rebecca RobertsJune 03, 2024
I liked it for the most part. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Anthony WalkerJanuary 17, 2025
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Sharon WhiteJanuary 17, 2025
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Carol MillerJune 19, 2025
A solid read. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. I'd probably recommend it to a friend.
Emily LopezAugust 05, 2025
I liked it for the most part. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Dorothy ThompsonAugust 18, 2025
I was pleasantly surprised. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. A solid 5/5 for me.
Joseph TorresApril 06, 2025
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Glad I picked this up.
Donna RodriguezSeptember 26, 2025
Honestly one of the better books I've read lately. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Worth the time and money.
Ashley ClarkMarch 23, 2025
An average read for me. The writing was fine, but I didn't feel very connected to the characters. They felt a bit flat. Might work better for someone else, just wasn't completely for me.
Kimberly PerezDecember 09, 2025
Honestly one of the better books I've read lately. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. A solid 5/5 for me.
Robert JonesMay 29, 2024
A solid read. I liked the main character, though some of the side plots were just okay. Enjoyable weekend read.
John ScottMarch 18, 2025
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Nicholas WrightJune 04, 2025
A solid read. I liked the main character, though some of the side plots were just okay. Still a good book.
Carol GarciaDecember 16, 2025
Good, but not quite perfect. Interesting premise and executed fairly well. Just a few slow chapters here and there. Still a good book.
Sharon AdamsFebruary 03, 2024
Finished it in a couple of days. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Will be looking for more from this author.
Lisa MillerMay 29, 2025
Not bad, but not my favorite. Some parts were interesting, while others were a bit of a slog to get through. A generous 3 stars.
Ashley JacksonJanuary 10, 2025
Really enjoyed this one. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Richard ThomasDecember 22, 2024
Really enjoyed this one. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Matthew HallApril 25, 2024
I liked it for the most part. The middle dragged a tiny bit, but the ending totally made up for it. Not bad at all.
Deborah DiazApril 05, 2024
Honestly one of the better books I've read lately. I got really invested in the main character's journey. Everything just clicked for me. Will be looking for more from this author.
Jessica ParkerMarch 28, 2025
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Enjoyable weekend read.
Andrew SmithDecember 15, 2024
Glad someone recommended this to me. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Cynthia ReyesApril 28, 2025
A solid read. I liked the main character, though some of the side plots were just okay. Enjoyable weekend read.
Ryan HarrisOctober 03, 2024
I was pleasantly surprised. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
Rebecca GreenDecember 26, 2024
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. I'd probably recommend it to a friend.
Stephanie ThompsonJune 01, 2025
Took me a few chapters to get into it, but it was worth it. I liked the main character, though some of the side plots were just okay. Still a good book.
Kimberly ParkerAugust 19, 2025
Such a great read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. A solid 5/5 for me.
Paul GomezApril 06, 2024
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. A solid 4 stars from me.
Betty WalkerJanuary 01, 2024
Such a great read. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
John CruzNovember 03, 2024
Finished it in a couple of days. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Sharon AdamsMay 17, 2024
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Enjoyable weekend read.
Jacob ClarkAugust 07, 2025
Honestly one of the better books I've read lately. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Kimberly YoungNovember 04, 2025
An average read for me. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. Might work better for someone else, just wasn't completely for me.
Stephanie HarrisJune 19, 2025
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Sandra MooreJanuary 14, 2024
Good, but not quite perfect. Interesting premise and executed fairly well. Just a few slow chapters here and there. A solid 4 stars from me.
Brian ClarkJanuary 11, 2025
An average read for me. The pacing was a bit slow and I found myself skimming a few pages. It wasn't terrible, just okay. It's fine if you have nothing else to read.
Mark SmithAugust 12, 2025
Such a great read. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Worth the time and money.
Jessica NguyenNovember 21, 2025
Honestly one of the better books I've read lately. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Glad I picked this up.
Mark CollinsMarch 12, 2025
Glad someone recommended this to me. The author did a great job wrapping everything up at the end. No weird plot holes left behind. A solid 5/5 for me.
Cynthia CampbellFebruary 16, 2024
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. A solid 5/5 for me.
Barbara HillMarch 04, 2025
It was just alright. It had some good moments, but the overall plot felt a bit disjointed in the second half. It's fine if you have nothing else to read.
Kimberly YoungNovember 02, 2025
Finished it in a couple of days. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Would probably read it again at some point.
Robert JonesMarch 04, 2025
Glad someone recommended this to me. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Definitely recommend it if you like this genre.
Thomas JohnsonJune 19, 2024
I have mixed feelings about this one. The writing was fine, but I didn't feel very connected to the characters. They felt a bit flat. It's fine if you have nothing else to read.
Michael MartinezApril 28, 2025
Honestly one of the better books I've read lately. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Definitely recommend it if you like this genre.
Brian RobertsApril 16, 2025
A very satisfying read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Would probably read it again at some point.
Rebecca SmithAugust 19, 2025
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. Still a good book.
Stephanie ParkerMarch 21, 2024
It was okay. It had some good moments, but the overall plot felt a bit disjointed in the second half. It's fine if you have nothing else to read.
Andrew AndersonSeptember 05, 2025
Pretty good overall. I liked the main character, though some of the side plots were just okay. Still a good book.
Michelle FloresNovember 25, 2025
Really enjoyed this one. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Eric NguyenMay 03, 2025
Glad someone recommended this to me. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
Patricia GomezFebruary 04, 2025
Good, but not quite perfect. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. Still a good book.
Sharon WhiteAugust 01, 2024
A very satisfying read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Will be looking for more from this author.
Laura HarrisDecember 31, 2024
Good, but not quite perfect. It held my attention, even if a few things were a little predictable. A solid 4 stars from me.
Sandra MooreFebruary 01, 2025
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Not bad at all.
Thomas TorresSeptember 06, 2024
A very satisfying read. I loved how the story unfolded. It kept me guessing without being too confusing. Will be looking for more from this author.
Charles MartinezJuly 13, 2025
I liked it for the most part. It held my attention, even if a few things were a little predictable. Still a good book.
Lisa MillerDecember 15, 2025
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
Dorothy HernandezJune 19, 2024
Such a great read. The pacing was spot on and the characters felt real. I didn't find myself getting bored at any point. Will be looking for more from this author.
Ryan MillerMarch 17, 2024
A very satisfying read. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Carol GarciaAugust 07, 2024
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Worth the time and money.
Jennifer WilliamsMarch 15, 2025
Pretty good overall. Interesting premise and executed fairly well. Just a few slow chapters here and there. Still a good book.
Linda WhiteSeptember 26, 2025
I liked it for the most part. Writing is good, just wish there was a bit more depth in certain parts. Still kept my attention though. I'd probably recommend it to a friend.
Barbara BakerMarch 31, 2024
Finished it in a couple of days. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Will be looking for more from this author.
Kimberly WrightOctober 09, 2024
Such a great read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Glad I picked this up.
David WilsonAugust 25, 2024
Such a great read. The writing style is very engaging. It’s easy to follow but still has a lot of depth. A solid 5/5 for me.
Joseph YoungMarch 29, 2025
Honestly one of the better books I've read lately. The writing style is very engaging. It’s easy to follow but still has a lot of depth. Would probably read it again at some point.
Carol GarciaDecember 14, 2025
Not bad, but not my favorite. It felt a bit repetitive in the middle. Could have been shorter. A generous 3 stars.
Christopher DavisMay 03, 2024
I was pleasantly surprised. I loved how the story unfolded. It kept me guessing without being too confusing. Would probably read it again at some point.
Daniel SmithOctober 31, 2024
Not bad, but not my favorite. The writing was fine, but I didn't feel very connected to the characters. They felt a bit flat. Might work better for someone else, just wasn't completely for me.
Amanda PerezFebruary 04, 2024
Really enjoyed this one. The writing style is very engaging. It’s easy to follow but still has a lot of depth. A solid 5/5 for me.
Elizabeth WhiteSeptember 16, 2024
I was pleasantly surprised. The author did a great job wrapping everything up at the end. No weird plot holes left behind. Would probably read it again at some point.
Robert MillerJanuary 06, 2024
Such a great read. I got really invested in the main character's journey. Everything just clicked for me. Would probably read it again at some point.
Robert JonesMay 29, 2024
Took me a few chapters to get into it, but it was worth it. It held my attention, even if a few things were a little predictable. Not bad at all.
Daniel LopezJuly 10, 2025
I have mixed feelings about this one. Some parts were interesting, while others were a bit of a slog to get through. A generous 3 stars.
Karen WilsonMay 10, 2024
Really enjoyed this one. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Would probably read it again at some point.
George MartinezOctober 18, 2025
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. I'd probably recommend it to a friend.
Sharon NguyenSeptember 15, 2024
It was okay. It felt a bit repetitive in the middle. Could have been shorter. It's fine if you have nothing else to read.
Jennifer HallApril 21, 2025
A solid read. The middle dragged a tiny bit, but the ending totally made up for it. I'd probably recommend it to a friend.
Andrew TaylorJanuary 09, 2024
Good, but not quite perfect. I liked the main character, though some of the side plots were just okay. Still a good book.
Stephanie HarrisMarch 09, 2024
Took me a few chapters to get into it, but it was worth it. The middle dragged a tiny bit, but the ending totally made up for it. A solid 4 stars from me.
Eric HarrisJanuary 21, 2024
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. Not bad at all.
Anthony HallNovember 16, 2025
A very satisfying read. It has a good balance of dialogue and description. Everything felt like it moved at the right speed. Will be looking for more from this author.
Kenneth GomezMarch 07, 2025
Pretty good overall. I liked the main character, though some of the side plots were just okay. Still a good book.
Patricia GomezJune 10, 2025
Honestly one of the better books I've read lately. I got really invested in the main character's journey. Everything just clicked for me. Definitely recommend it if you like this genre.
Karen WilsonNovember 25, 2024
A solid read. Interesting premise and executed fairly well. Just a few slow chapters here and there. Not bad at all.
