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When to use thread pool in C#? [closed]
...e thread pools for database access, physics/simulation, AI(games), and for scripted tasks ran on virtual machines that process lots of user defined tasks.
Normally a pool consists of 2 threads per processor (so likely 4 nowadays), however you can set up the amount of threads you want, if you know h...
Selecting multiple columns in a pandas dataframe
... is in the
3rd & 4th columns. If you don't know their names when your script runs, you can do this
newdf = df[df.columns[2:4]] # Remember, Python is 0-offset! The "3rd" entry is at slot 2.
As EMS points out in his answer, df.ix slices columns a bit more concisely, but the .columns slicing in...
PHP: How to send HTTP response code?
I have a PHP script that needs to make responses with HTTP response codes (status-codes), like HTTP 200 OK, or some 4XX or 5XX code.
...
Why would a JavaScript variable start with a dollar sign? [duplicate]
I quite often see JavaScript with variables that start with a dollar sign. When/why would you choose to prefix a variable in this way?
...
Using str_replace so that it only acts on the first match?
... @oLinkWebDevelopment I'd be interested in seeing your benchmark script. I think it could prove to be useful.
– Dave Morton
Apr 7 '17 at 16:28
...
mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t
...eck spelling, typos, letter case. Also you have to make sure that your PHP script connects to a correct database
Or, if it says there is an error in the SQL syntax, then you have to examine your SQL. And the problem spot is right before the query part cited in the error message.
If you don't unde...
How do I push a local repo to Bitbucket using SourceTree without creating a repo on bitbucket first?
...able from the Git Bash shell.
Using this method you could easily create a script to import many repos from a local git server to Bitbucket.
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Practical non-image based CAPTCHA approaches?
...Overflow. This is necessary to prevent bots, spammers, and other malicious scripted activity. We only want human beings to post or edit things here!
...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
... brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 4...
How to decide font color in white or black depending on background color?
...
How about this (JavaScript code)?
/**
* Get color (black/white) depending on bgColor so it would be clearly seen.
* @param bgColor
* @returns {string}
*/
getColorByBgColor(bgColor) {
if (!bgColor) { return ''; }
return (parseInt(bgC...