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How to convert a std::string to const char* or char*?
...]; // valid for n <= x.size()
// i.e. you can safely read the NUL at p[x.size()]
Only for the non-const pointer p_writable_data and from &x[0]:
p_writable_data[n] = c;
p_x0_rw[n] = c; // valid for n <= x.size() - 1
// i.e. don't overwrite the impleme...
SQL JOIN vs IN performance?
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This Thread is pretty old but still mentioned often. For my personal taste it is a bit incomplete, because there is another way to ask the database with the EXISTS keyword which I found to be faster more often than not.
So if you a...
Is it possible only to declare a variable without assigning any value in Python?
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I'd heartily recommend that you read Other languages have "variables" (I added it as a related link) – in two minutes you'll know that Python has "names", not "variables".
val = None
# ...
if val is None:
val = any_object
...
Captured variable in a loop in C#
.../ Just one variable
foreach (string x in foo) // And again, despite how it reads out loud
See section 7.14.4.2 of the C# 3.0 spec for more details of this, and my article on closures has more examples too.
Note that as of the C# 5 compiler and beyond (even when specifying an earlier version of C#...
How do I clear my local working directory in Git? [duplicate]
...l be removed.
Relevant links:
git-reset man page
git-clean man page
git ready "cleaning up untracked files" (as Marko posted)
Stack Overflow question "How to remove local (untracked) files from the current Git working tree")
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Browse and display files in a git repo without cloning
...u want would be lovely functionality if they could add it, but from what I read it's not very easy since getting history etc needs a lot of information to be local to git, and at that point you may as well have done a git fetch.
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How to determine if a string is a number with C++?
... For a game I am writing I just need to check if a line from the file I am reading is a number or not (I will know if it is a parameter this way). I wrote the below function which I believe was working smoothly (or I accidentally edited to stop it or I'm schizophrenic or Windows is schizophrenic):
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Rebasing a branch including all its children
...Should not that be --onto F instead of --onto B, as all these commits are aready onto B, and we move them onto F ?
– Ad N
Sep 27 '16 at 14:46
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Why does Maven have such a bad rep? [closed]
... All it takes is one working example of how to use the Maven ant tasks to read your pom file and generate an ANT classpath containing all your dependencies.
– Jherico
Nov 13 '09 at 22:02
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Use numpy array in shared memory for multiprocessing
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While the answers already given are good, there is a much easier solution to this problem provided two conditions are met:
You are on a POSIX-compliant operating system (e.g. Linux, Mac OSX); and
Your child processes need read-only access to t...