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What HTTP status response code should I use if the request is missing a required parameter?
...You can send a 400 Bad Request code. It's one of the more general-purpose 4xx status codes, so you can use it to mean what you intend: the client is sending a request that's missing information/parameters that your application requires in order to process it correctly.
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When increasing the size of VARCHAR column on a large table could there be any problems?
...fy NULL or NOT NULL explicitly to avoid "accidents" if one of the SET ANSI_xx settings are different eg run in osql not SSMS for some reason
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Is an entity body allowed for an HTTP DELETE request?
...ection 9, and 9.4 specifically)
a message-body is explicitly forbidden in 1xx (informational), 204 (no content), and 304 (not modified) responses (section 4.3)
all other responses include a message-body, though it may be of zero length (section 4.3)
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Convert SVG image to PNG with PHP
...because I made sure each state's attributes were formatted exactly as (id="XX" style="fill:#XXXXXX").
– WebChemist
Oct 16 '12 at 0:08
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Django in / not in query
... Depending on the context, if the filter is like "having count(xx)==yy" it's more than 100x faster to use annotate() (timeit gave me 1.0497902309998608 vs 0.00514069400014705)
– Olivier Pons
Apr 11 '19 at 8:18
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HTTPS and SSL3_GET_SERVER_CERTIFICATE:certificate verify failed, CA is OK
...m to curl.cainfo.
Since PHP 5.3.7 you could do:
download https://curl.haxx.se/ca/cacert.pem and save it somewhere.
update php.ini -- add curl.cainfo = "PATH_TO/cacert.pem"
Otherwise you will need to do the following for every cURL resource:
curl_setopt ($ch, CURLOPT_CAINFO, "PATH_TO/cacert.pem...
Avoid trailing zeroes in printf()
... -d;
sz = (d >= 0) ? 0 : 1;
// Add one for each whole digit (0.xx special case).
if (d2 < 1) sz++;
while (d2 >= 1) { d2 /= 10.0; sz++; }
// Adjust for decimal point and fractionals.
sz += 1 + n;
// Create format string then use it.
sprintf (s, "%*.*f", ...
How can I make Visual Studio's build be very verbose?
...and and build it from a dos console msdn.microsoft.com/en-us/library/txcwa2xx(VS.80).aspx. Last time I did something similar (but I used CMake to generate the nmake makefiles) all the commands were printed out into the console display.
– javier-sanz
Jul 31 '09 ...
Loop through an array of strings in Bash?
...e array is missing elements. For example, if you have array elements A[1]='xx', A[4]='yy' and A[9]='zz', the length will be 3 and the loop won't process all the elements.
– Mr Ed
Dec 12 '17 at 9:18
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Creating multiline strings in JavaScript
...String().match(/[^]*\/\*([^]*)\*\/\}$/)[1];
external edit: jsfiddle
ES20xx supports spanning strings over multiple lines using template strings:
let str = `This is a text
with multiple lines.
Escapes are interpreted,
\n is a newline.`;
let str = String.raw`This is a text
with mul...