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Split comma-separated strings in a column into separate rows
...me number of strings. i.e. data.table(id= "X21", a = "chr1;chr1;chr1", b="123;133;134",c="234;254;268") becoming data.table(id = c("X21","X21",X21"), a=c("chr1","chr1","chr1"), b=c("123","133","134"), c=c("234","254","268")) ?
– Reilstein
Jan 19 '19 at 1:39
...
Python argparse mutual exclusive group
... answered Dec 28 '14 at 10:38
Oz123Oz123
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Using OpenSSL what does “unable to write 'random state'” mean?
...
Yes, if you run from php web server, the user is www-data, and you should add "export" before every openssl: shell_exec('export RANDFILE=".rnd";openssl ecparam -genkey -name secp256k1'))
– diyism
Jun 21 '13...
Scalar vs. primitive data type - are they the same thing?
...ce of scalars and primitives, it depends on the language. According to the PHP manual, for example, only half of its primitive types are scalars: php.net/manual/en/language.types.intro.php
– Joe Bowbeer
May 16 '16 at 18:36
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How do I match any character across multiple lines in a regular expression?
..., but there should be a modifier that you can add to the regex pattern. In PHP it is:
/(.*)<FooBar>/s
The s at the end causes the dot to match all characters including newlines.
share
|
imp...
What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...
Difference between \w and \b regular expression meta characters
...javascriptkit.com/javatutors/redev2.shtml
http://www.virtuosimedia.com/dev/php/37-tested-php-perl-and-javascript-regular-expressions
http://www.i-programmer.info/programming/javascript/4862-master-javascript-regular-expressions.html
I found this to be a very useful book:
Mastering Regular Expres...
Can anyone explain what JSONP is, in layman terms? [duplicate]
...p; xhr.status == 200) {
// success
};
};
xhr.open("GET", "somewhere.php", true);
xhr.send();
JSONP Request:
var tag = document.createElement("script");
tag.src = 'somewhere_else.php?callback=foo';
document.getElementsByTagName("head")[0].appendChild(tag);
The difference between a JSON...
https connection using CURL from command line
...e call to allow insecure connections.
curl -k https://whatever.com/script.php
Edit: I discovered the root of the problem. I was using an SSL certificate (from StartSSL, but I don't think that matters much) and hadn't set up the intermediate certificate properly. If you're having the same problem ...
How to handle AccessViolationException
...rogram
{
static void InvokeCse()
{
IntPtr ptr = new IntPtr(123);
System.Runtime.InteropServices.Marshal.StructureToPtr(123, ptr, true);
}
private static void ExecInThisDomain()
{
try
{
var o = new BoundaryLessExecHelper();
...