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How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
...hese macros must only be defined if explicitly requested.
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
... now PRIu64 will work
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How can I delete a newline if it is the last character in a file?
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perl -pe 'chomp if eof' filename >filename2
or, to edit the file in place:
perl -pi -e 'chomp if eof' filename
[Editor's note: -pi -e was originally -pie, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a '...
Using regular expressions to parse HTML: why not?
...y question on stackoverflow where the asker is using regex to grab some information from HTML will inevitably have an "answer" that says not to use regex to parse HTML.
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How do I check for null values in JavaScript?
How can I check for null values in JavaScript? I wrote the code below but it didn't work.
19 Answers
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Node.js or Erlang
...lang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty about creating highly scalable servi...
grep a file, but show several surrounding lines?
I would like to grep for a string, but also show the preceding five lines and the following five lines as well as the matched line. How would I be able to do this?
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Can we make unsigned byte in Java
.... The problem is the data I am receiving is unsigned and Java does not support unsigned byte, so when it reads the data it treats it as signed.
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How can I convert String to Int?
I have a TextBoxD1.Text and I want to convert it to an int to store it in a database.
30 Answers
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Difference between float and decimal data type
...to do on this cases, it
truncated the rest, thus losing the 1/3 part.
So for sums the decimal is better, but for divisions the float is
better, up to some point, of course. I mean, using DECIMAL will not give
you a "fail proof arithmetic" in any means.
Hope this helps.
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Check whether number is even or odd
How would I determine whether a given number is even or odd? I've been wanting to figure this out for a long time now and haven't gotten anywhere.
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