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How do I calculate the date in JavaScript three months prior to today?
...you want to do like momentjs does, and correct these last day of the month errors by moving to the last day of the month, you can do something like this:
const d = new Date("March 31, 2019");
console.log(d.toLocaleDateString());
const month = d.getMonth();
d.setMonth(d.getMonth() - 1);
whil...
How to get all Errors from ASP.Net MVC modelState?
I want to get all the error messages out of the modelState without knowing the key values. Looping through to grab all the error messages that the ModelState contains.
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Simple Log to File example for django 1.3+
...!!")
log.info("Hey there it works!!")
log.warn("Hey there it works!!")
log.error("Hey there it works!!")
Log levels are explained here and for pure python here.
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What is the worst real-world macros/pre-processor abuse you've ever come across?
... to do a quick ten pushups. He explained this last one as "Compiler found error in code. This is punishment".
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edited May 24 '10 at 20:05
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Writing files in Node.js
...e, and I tried changing the file path to "/home/", but I got the following error: { [Error: EACCES, open '/home/test.txt'] errno: 3, code: 'EACCES', path: '/home/test.txt' } How can I modify this script so that it will work outside of /tmp?
– Anderson Green
Se...
How to upgrade rubygems
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Respectively with shellcheck errors fixed: gem update "$(gem outdated | cut -d ' ' -f 1)";.
– BernhardWebstudio
Oct 19 '19 at 9:38
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How to scroll to top of long ScrollView layout?
For part of my app, the user is presented with a list of names and is asked to group them as they see fit.
15 Answers
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How can I replace every occurrence of a String in a file with PowerShell?
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Thanks - I get an error "replace : Method invocation failed because [System.Object[]] doesn't contain a method named 'replace'." though?
– amateur
Jun 17 '13 at 9:42
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Laravel Redirect Back with() Message
...ying to redirect to the previous page with a message when there is a fatal error.
17 Answers
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Checking from shell script if a directory contains files
...xCraft's article posted in 2007. Add 2>/dev/null to suppress the output error "No such file or directory".
See also Andrew Taylor's answer (2008) and gr8can8dian's answer (2011).
if [ -n "$(ls -A your/dir 2>/dev/null)" ]
then
echo "contains files (or is a file)"
else
echo "empty (or does ...