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Best way to randomize an array with .NET
...m();
rng.Shuffle(array);
rng.Shuffle(array); // different order from first call to Shuffle
* For longer arrays, in order to make the (extremely large) number of permutations equally probable it would be necessary to run a pseudo-random number generator (PRNG) through many iterations for each swap ...
“The remote certificate is invalid according to the validation procedure.” using Gmail SMTP server
...confirmation that the error is being throw because of a bad certificate.
Call this method before you call smtpclient.Send():
[Obsolete("Do not use this in Production code!!!",true)]
static void NEVER_EAT_POISON_Disable_CertificateValidation()
{
// Disabling certificate validat...
Is it a bad practice to use an if-statement without curly braces? [closed]
... indeed, this answer actually took me from reading these answers cynically to being mildly concerned i may have actually made this mistake.
– omikes
Feb 7 '18 at 19:51
3
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Undefined, unspecified and implementation-defined behavior
...s coming from other languages (other languages try to hide it better). Basically, it is possible to write C++ programs that do not behave in a predictable way, even though many C++ compilers will not report any errors in the program!
Let's look at a classic example:
#include <iostream>
int m...
#1071 - Specified key was too long; max key length is 767 bytes
...ters. And since Mysql's utf8mb4 character set (which the rest of the world calls utf8) needs (at most) 4 bytes per character you can only index up to VARCHAR(191). Mysql's utf8 character set (which the rest of the world calls broken) needs at most 3 bytes per character so if you are using that (whic...
How to clear the canvas for redrawing
... comment after all this time, but this has been bothering me for a year... Call beginPath when you begin a new path, do not assume that just because you are clearing the canvas you want to clear your existing path as well! This would be a horrible practice and is a backwards way of looking at drawin...
How can I concatenate two arrays in Java?
...y is probably overkill for this specific situation, but no harm is done in calling out that it exists, especially since there's so many excellent bits of functionality in Apache Commons.
– Rob
Oct 12 '08 at 15:58
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(How) can I count the items in an enum?
...
Call it LAST or ALWAYS_AT_END or something not so cryptic. Make it stick out. So that subsequent maintainers don't accidentally add new entries after you end marker.
– Martin York
Jan 20...
How do I use sudo to redirect output to a location I don't have permission to write to?
...and STDOUT separately here: stackoverflow.com/questions/692000/… ... basically perl -e 'print "STDIN\n"; print STDERR "STDERR\n"; ' > >( tee stdout.log ) 2> >( tee stderr.log >&2 )
– errant.info
Jun 13 '13 at 11:40
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Finding all possible permutations of a given string in python
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The itertools module has a useful method called permutations(). The documentation says:
itertools.permutations(iterable[, r])
Return successive r length permutations of elements in the iterable.
If r is not specified or is None, then r defaults to the ...