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Is there still any reason to learn AWK?
... Language by its authors Aho, Kernighan, and Weinberger. You would think, from the name, that it simply teaches you awk. Actually, that is just the beginning. Launching into the vast array of problems that can be tackled once one is using a concise scripting language that makes string manipulatio...
Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...gical unit at a time. The classic example is working with large resultsets from a database: most programmers fetch the entire resultset into an array and then loop over it one or more times with foreach(). It is much more memory efficient to use a while() loop to fetch and process one row at a time....
How to wait for async method to complete?
...rruptTransfer();
await t;
}
// read some data from device; we need to wait for this to return
await RequestToGetInputReport();
}
}
private async Task RequestToGetInputReport()
{
// lots of code prior to this
int bytesRead = await GetInputReportViaInt...
Bogus foreign key constraint fail
...
from this blog:
You can temporarily disable foreign key checks:
SET FOREIGN_KEY_CHECKS=0;
Just be sure to restore them once you’re done messing around:
SET FOREIGN_KEY_CHECKS=1;
...
Add a reference column migration in Rails 4
...s answer. Please comment on above answer if you think something is missing from it. Thanks.
– M. Habib
Feb 9 '18 at 14:02
add a comment
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Cron jobs and random times, within given hours
...
and in /path/to/bashscript:
#!/bin/bash
maxdelay=$((14*60)) # 14 hours from 9am to 11pm, converted to minutes
for ((i=1; i<=20; i++)); do
delay=$(($RANDOM%maxdelay)) # pick an independent random delay for each of the 20 runs
(sleep $((delay*60)); /path/to/phpscript.php) & # backgr...
Check if a number has a decimal place/is a whole number
...ing to do with 20.0, still has a decimal point and satisfies the above. +1 from me anyway for teaching me something new :)
– Abe Petrillo
Sep 1 '11 at 16:53
7
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How to assert greater than using JUnit Assert?
I have these values coming from a test
8 Answers
8
...
How to replace multiple strings in a file using PowerShell
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
Not the answer you're looking for? Browse other questions t...
What is the best way to initialize a JavaScript Date to midnight?
...
Just wanted to clarify that the snippet from accepted answer gives the nearest midnight in the past:
var d = new Date();
d.setHours(0,0,0,0); // last midnight
If you want to get the nearest midnight in future, use the following code:
var d = new Date();
d.setHo...