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The written versions of the logical operators
.... When I wrote up a test program in NetBeans, I got the red underlining as if there was a syntax error and figured the website was wrong, but it is NetBeans which is wrong because it compiled and ran as expected.
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how to listen to N channels? (dynamic select statement)
...tement, it blocks until at least one of the cases can
proceed, makes a uniform pseudo-random choice, and then executes that
case. It returns the index of the chosen case and, if that case was a
receive operation, the value received and a boolean indicating whether
the value corresponds to a ...
How can I randomize the lines in a file using standard tools on Red Hat Linux?
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It uses a module, but the module is part of the Perl code distribution. If that's not good enough, you may consider rolling your own.
I tried using this with the -i flag ("edit-in-place") to have it edit the file. The documentation suggests it should work, but it doesn't. It still displays the s...
Maven: how to override the dependency added by a library
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Simply specify the version in your current pom. The version specified here will override other.
Forcing a version
A version will always be honoured if it is declared in the current POM with a particular version - however, it shoul...
python list by value not by reference [duplicate]
...e. an assertion should fail) in a new question? Most likely, you're not modifying the list itself, but its elements. Create a deep copy if you want a new list whose elements are copies as well.
– phihag
May 28 '17 at 20:28
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Programmatically get the version number of a DLL
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This works if the dll is .net or Win32. Reflection methods only work if the dll is .net. Also, if you use reflection, you have the overhead of loading the whole dll into memory. The below method does not load the assembly into memory.
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clearing a char array c
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It depends on how you want to view the array. If you are viewing the array as a series of chars, then the only way to clear out the data is to touch every entry. memset is probably the most effective way to achieve this.
On the other hand, if you are choosing to view th...
Updating packages in Emacs
I have the following setup for packages (not sure if there is a better recommended one):
4 Answers
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Map.clear() vs new Map : Which one will be better? [duplicate]
..., but in the garbage collector thread. For 1000 records you won't see any difference.
BUT. The performance guide tells you that it is always better not to create new objects, if you can. So I would go with clear() method.
Anyway, try both variants and try to measure. Always measure!
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Cron job every three days
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Run it every three days...
0 0 */3 * *
How about that?
If you want it to run on specific days of the month, like the 1st, 4th, 7th, etc... then you can just have a conditional in your script that checks for the current day of the month.
if (((date('j') - 1) % 3))
exit();
or...