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Check if string matches pattern
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From the docs on re.match: If zero or more characters at the beginning of string match the regular expression pattern. I just spent like 30 minutes trying to understand why I couldn't match something at the end of a string. Seems like it's not possible with match...
Best way to serialize an NSData into a hexadeximal string
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Nice, but two suggestions: (1) I think appendFormat is more efficient for large data since it avoids creating an intermediate NSString and (2) %x represents an unsigned int rather than unsigned long, although the difference is harmless.
– svachalek
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How do I tokenize a string in C++?
... std::string::npos, and extract the contents using std::string::substr.
A more fluid (and idiomatic, but basic) version for splitting on whitespace would use a std::istringstream:
auto iss = std::istringstream{"The quick brown fox"};
auto str = std::string{};
while (iss >> str) {
proces...
Why should I use a pointer rather than the object itself?
...appropriate tool for the job. In almost all situations, there is something more appropriate and safer than performing manual dynamic allocation and/or using raw pointers.
Dynamic allocation
In your question, you've demonstrated two ways of creating an object. The main difference is the storage dur...
Test if characters are in a string
...unction
grepl(value, chars, fixed = TRUE)
# TRUE
Use ?grepl to find out more.
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How do I create a unique ID in Java? [duplicate]
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xkcd style graphs in MATLAB
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+1 for EXPORT_FIG. Turning all my graphs more pleasing thanks to anti-aliasing.
– Yamaneko
Oct 4 '12 at 6:40
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Fastest way(s) to move the cursor on a terminal command line?
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Since this hasn't been closed yet, here are a few more options.
Use Ctrl+x followed by Ctrl+e to open the current line in the editor specified by $FCEDIT or $EDITOR or emacs (tried in that order).
If you ran the command earlier, hit Ctrl+r for a reverse history search and ...
Calculate the median of a billion numbers
...low that value, and (b) resume sending their sorted data from that point.
More generally, there's probably a clever challenge-response guessing game that the control machine can play with the 99 sorting machines.
This involves round-trips between the machines, though, which my simpler first versio...
How to get users to read error messages?
...ral error message and to include a checkbox indicating 'Do you wish to see more of these error messages in the future?', the last thing an end-user wants, is to be working in the middle of the software to be bombarded with popup messages, they will get frustrated and will be turned off by the applic...