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Most efficient way to increment a Map value in Java
...d too basic for this forum, but we'll see. I'm wondering how to refactor some code for better performance that is getting run a bunch of times.
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What is the difference between Trap and Interrupt?
...an exception in a user process. It's caused by division by zero or invalid memory access. It's also the usual way to invoke a kernel routine (a system call) because those run with a higher priority than user code. Handling is synchronous (so the user code is suspended and continues afterwards). In a...
Convert NSData to String?
...rwise nil will be returned:
Returns nil if the initialization fails for some reason (for example if data does not represent valid data for encoding).
Prior Swift 3.0
String(data: yourData, encoding: NSUTF8StringEncoding)
Swift 3.0 Onwards
String(data: yourData, encoding: .utf8)
See String#init(d...
How to install Xcode Command Line Tools
...downloads" and find the Command line tools in the list - hope this saves some time for someone.
– pagid
Nov 21 '12 at 0:37
148
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How to run cron once, daily at 10pm
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Remember to check the system's date, it happened to me to set crontab to start a job at 22, but it actually started at 23 because the system was UTC (so 22 for the system was 23 for me in GMT).
– nnsense
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Passing just a type as a parameter in C#
Hypothetically it'd be handy for me to do this:
7 Answers
7
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Searching word in vim?
...
like this:
/\<word\>
\< means beginning of a word, and \> means the end of a word,
Adding @Roe's comment:
VIM provides a shortcut for this. If you already have word on screen and you want to find other instances of it, you can put the cursor on...
Firing events on CSS class changes in jQuery
...ipt, you could use a trigger to raise your own event.
$(this).addClass('someClass');
$(mySelector).trigger('cssClassChanged')
....
$(otherSelector).bind('cssClassChanged', data, function(){ do stuff });
but otherwise, no, there's no baked-in way to fire an event when a class changes. change() onl...
No visible cause for “Unexpected token ILLEGAL”
...one of the four basic token types, it gets labelled "ILLEGAL" on most implementations, and this error is thrown.
The same error is raised if, for example, you try to run a js file with a rogue @ character, a misplaced curly brace, bracket, "smart quotes", single quotes not enclosed properly (e.g. th...
React ignores 'for' attribute of the label element
In React (Facebook's framework), I need to render a label element bound to a text input using the standard for attribute.
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