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Why does 'continue' behave like 'break' in a Foreach-Object?
...on a particular iteration, thus, it simulates the continue in a loop.
1..100 | ForEach-Object {
if ($_ % 7 -ne 0 ) { return }
Write-Host "$($_) is a multiple of 7"
}
There is a gotcha to be kept in mind when refactoring. Sometimes one wants to convert a foreach statement block into a pipe...
Prepend a level to a pandas MultiIndex
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cs95
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answered Feb 7 '17 at 16:11
okartalokartal
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Hex representation of a color with alpha channel?
...se rgba() functional notation with decimals or percentages, e.g. rgba(255, 0, 0, 0.5) would be 50% transparent red. RGB channels are 0-255 or 0%-100%, alpha is 0-1.
In CSS 4*, you can specify the alpha channel using the 7th and 8th characters of an 8 digit hex colour, or 4th character of a 4 digit ...
Exit a Script On Error
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answered Dec 7 '10 at 21:13
Byron WhitlockByron Whitlock
48.4k2626 gold badges112112 silver badges164164 bronze badges
...
arrayfun can be significantly slower than an explicit loop in matlab. Why?
...
101
You can get the idea by running other versions of your code. Consider explicitly writing out th...
Can I set max_retries for requests.request?
... this pull request). Currently (requests 1.1), the retries count is set to 0. If you really want to set it to a higher value, you'll have to set this globally:
import requests
requests.adapters.DEFAULT_RETRIES = 5
This constant is not documented; use it at your own peril as future releases could...
How to calculate the difference between two dates using PHP?
...rom this it's rather easy to calculate different time periods.
$date1 = "2007-03-24";
$date2 = "2009-06-26";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years ...
Generate random numbers using C++11 random library
...u can see his full talk here: http://channel9.msdn.com/Events/GoingNative/2013/rand-Considered-Harmful
#include <random>
#include <iostream>
int main() {
std::random_device rd;
std::mt19937 mt(rd());
std::uniform_real_distribution<double> dist(1.0, 10.0);
for (in...
SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
...
Since 3.24.0 SQLite also supports upsert, so now you can simply write the following
INSERT INTO visits (ip, hits)
VALUES ('127.0.0.1', 1)
ON CONFLICT(ip) DO UPDATE SET hits = hits + 1;
...
Bash empty array expansion with `set -u`
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20
The only safe idiom is ${arr[@]+"${arr[@]}"}
This is already the recommendation in ikegami's an...