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All falsey values in JavaScript
..., but also == false.
You might think if (value && value == false) alert('Huh?') is a logical impossibility that couldn't happen, but it will, for:
"0" and '0' - they're non-empty strings, which are truthy, but Javascript's == matches numbers with equivalent strings (e.g. 42 == "42"). Sinc...
快速开发CSS的利器LESS 系列教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... <link type="text/less" rel="stylesheet/less" href="test.less" />
<script src="less.js"></script>
</head>
<body>
<div class="con">
独行冰海
<p>利利</p>
</div>
</body>
</html>
2.快速开发CSS的利器 - less 混入
less 混入
混入，指的是在CS...
Quick and easy file dialog in Python?
I have a simple script which parses a file and loads it's contents to a database. I don't need a UI, but right now I'm prompting the user for the file to parse using raw_input which is most unfriendly, especially because the user can't copy/paste the path. I would like a quick and easy way to pre...
Run function from the command line
...
The second one is a more general answer. I have a script defined multiple customer functions, and only call one depending on my need
– xappppp
Apr 15 '18 at 4:16
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How do I install Python packages on Windows?
...ironment so that you can use pip anywhere. It's somewhere like C:\Python33\Scripts.
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
How to wait in a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ?
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Should I put the Google Analytics JS in the or at the end of ?
Google gives me a piece of javascript and tells me to include it in the <head> .
7 Answers
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Error handling in Bash
...
set -e
as a rudimentary error mechanism. It will immediately stop your script if a simple command fails. I think this should have been the default behavior: since such errors almost always signify something unexpected, it is not really 'sane' to keep executing the following commands.
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IF… OR IF… in a windows batch file
...ith nearly identical answers to Using an OR in an IF statement WinXP Batch Script
Final addendum - I almost forgot my favorite technique to test if a variable is any one of a list of case insensitive values. Initialize a test variable containing a delimitted list of acceptable values, and then use s...
Send file using POST from a Python script
Is there a way to send a file using POST from a Python script?
8 Answers
8
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