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When are you supposed to use escape instead of encodeURI / encodeURIComponent?
When encoding a query string to be sent to a web server - when do you use escape() and when do you use encodeURI() or encodeURIComponent() :
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How can I view live MySQL queries?
How can I trace MySQL queries on my Linux server as they happen?
12 Answers
12
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What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
... to understand classic HTTP web traffic first.
Regular HTTP:
A client requests a webpage from a server.
The server calculates the response
The server sends the response to the client.
Ajax Polling:
A client requests a webpage from a server using regular HTTP (see HTTP above).
The client re...
Test if a command outputs an empty string
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Previously, the question asked how to check whether there are files in a directory. The following code achieves that, but see rsp's answer for a better solution.
Empty output
Commands don’t return values – they output them. You can ...
Batch renaming files with Bash
...n feature
for i in ./*.pkg ; do mv "$i" "${i/-[0-9.]*.pkg/.pkg}" ; done
Quotes are needed for filenames with spaces.
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How do I read any request header in PHP
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IF: you only need a single header, instead of all headers, the quickest method is:
<?php
// Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP as an Apache mod...
How to insert tab character when expandtab option is on in Vim
...Also, as noted by @feedbackloop, on Windows you may need to press <CTRL-Q> rather than <CTRL-V>.
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How do I use vim registers?
...tended).
Note that p or P pastes from the default register. The longhand equivalent would be ""p (or ""P) and "0 holds the last yank, "1holds the last delete or change.
For more info see :help registers.
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adding directory to sys.path /PYTHONPATH
... or manipulating sys.path directly. See, for example, the answers to this question.
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Using semicolon (;) vs plus (+) with exec in find
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Dumb q: I notice that + associated with -exec is always escaped, but + associated with -mtime is not. Do you know the reason? I guess it is habit from escaping ; associated with -exec.
– kevinarpe
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