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Efficiently test if a port is open on Linux?
... Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "No one is listening!"
exec 6>&- # close output connection
exec 6<&- # close input connection
T...
Using Enum values as String literals
... This answer is in fact wrong: as you can call .name() See: stackoverflow.com/a/6667365/887836
– Alex
May 30 '16 at 13:49
3
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Detect Safari browser
...sers, which includes "safari" but not "chrome": developers.whatismybrowser.com/useragents/explore/software_name/…
– Eric Andrew Lewis
Mar 1 '19 at 15:41
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ASP.NET: Session.SessionID changes between requests
...n my case I figured out that the session cookie had a domain that included www. prefix, while I was requesting page with no www..
Adding www. to the URL immediately fixed the problem. Later I changed cookie's domain to be set to .mysite.com instead of www.mysite.com.
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Rounding up to next power of 2
...bit value:
Round up to the next highest power of 2
unsigned int v; // compute the next highest power of 2 of 32-bit v
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
The extension to other widths should be obvious.
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How to get result of console.trace() as string in javascript with chrome or firefox?
...source)
at Object.evaluate (unknown source)
and in Firefox:
@http://www.google.com.ua/:87 _firebugInjectedEvaluate("with(_FirebugCommandLine){try { var a = {}; a.debug() } catch(ex) {console.log(ex.stack)}\n};")
@http://www.google.com.ua/:87 _firebugEvalEvent([object Event])
@http://www.googl...
Programmatically selecting text in an input field on iOS devices (mobile Safari)
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Start a git commit message with a hashmark (#)
Git treats lines starting with # as comment lines when committing. this is very annoying when working with a ticket tracking system, and trying to write the ticket number at the beginning of the line, e.g.
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pip broke. how to fix DistributionNotFound error?
...rs about wheel when you use pip. At that point look at this: stackoverflow.com/questions/20905350/…
– mchicago
Jan 17 '14 at 22:23
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Example JavaScript code to parse CSV data
...y.
<script type="text/javascript">
// ref: http://stackoverflow.com/a/1293163/2343
// This will parse a delimited string into an array of
// arrays. The default delimiter is the comma, but this
// can be overriden in the second argument.
function CSVToArray( strData, strDe...