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Signal handling with multiple threads in Linux
...al is received? Let's say I wrote a custom signal handler for SIGUSR1, and now I'm sending that signal to the process. The root thread will get that signal. Maybe it's in the middle of some function at that moment. What is going to happen?
– user500944
Jul 26 '...
How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...d, but that something is done badly before does not justify doing it badly now.
– ifly6
May 18 '18 at 22:20
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What's the difference between String(value) vs value.toString()
...
String(o);
} catch (e) {
alert(e); // TypeError
}
If you want to know more about this mechanism I would recommend looking at the ToPrimitive and the ToString internal operations.
I also recommend reading this article:
Object-to-Primitive Conversions in JavaScript
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In PHP, what is a closure and why does it use the “use” identifier?
... So it's ONLY used for closures? Thanks for you explanation, I did not know the difference between anonymous function and a closure
– SeanDowney
Jun 30 '09 at 19:01
140
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HTML minification? [closed]
...kind of hard to automate the process and definitely required some skills. Knowing that a lot of high level sites even right now are not using gzip (which is trivial), it is understandable that people were reluctant in minifying html.
So why were people minifying js, but not html? When you minify JS...
Is there a CSS selector for the first direct child only?
...erited by that div's children divs:
div.section > div { color: red }
Now, both that div and its children will be red. You need to cancel out whatever you set on the parent if you don't want it to inherit:
div.section > div { color: red }
div.section > div div { color: black }
Now only...
How do I remove the old history from a git repository?
...nreachable ; Will show you the list of what will be deleted
git gc --prune=now ; Will actually delete your data
How to remove all git local tags?
Ps: Older versions of git didn't support clone/push/pull from/to shallow repos.
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SOAP server and client application VCL+indy demo for Delphi XE?
... single one of the Delphi 2007 era SOAP demos from the WebServices folder, now updated for Delphi XE and XE2, including converting the old WAD servers into new INDY VCL servers. You'd think that was impressive, except it's not. It's really easy. Just use the wizard to create a new project, and then...
Switch on ranges of integers in JavaScript [duplicate]
... the > comparisons, they just make it confusing. By the second case we know that x must not be less than 5, so we might as well not include the overlapping comparisons - they'll just cause confusion later on.
– David Mason
Oct 9 '13 at 23:34
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How can I replace a newline (\n) using sed?
...need the \n to find what you're looking for. Since GNU sed
version 3.02.80 now supports this syntax:
sed '/start/,+4d' # to delete "start" plus the next 4 lines,
in addition to the traditional '/from here/,/to there/{...}' range
addresses, it may be possible to avoid the use of \n ent...