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Java - removing first character of a string
...u are actually creating a new string with all the overhead implied (memory allocation and garbage collection). So if you want to make a series of modifications to a string and care only about the final result (the intermediate strings will be dead as soon as you 'modify' them), it may make more sen...
How to execute shell command in Javascript
...ver-service application!
var exec = require('child_process').exec;
exec('php main.php', function (error, stdOut, stdErr) {
// do what you want!
});
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How do you version your database schema? [closed]
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Brazil looks pretty good, too bad I'm using mainly PHP. Ever considered porting the system?
– Eran Galperin
Jan 1 '09 at 20:26
add a comment
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When should I use the HashSet type?
... HashSet<string> of all the valid commands, so whenever I hit a @xxx token in the lexer, I use validCommands.Contains(tokenText) as my O(1) validity check. I really don't care about anything except existence of the command in the set of valid commands. Lets look at the alternatives I faced:
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Why use iterators instead of array indices?
... end+1(!). For streams the iterator model is just surreal -- an imaginary token that does not exist. Likewise for linked lists. The paradigm only makes sense for arrays, and then not much. Why do I need two iterator object, not just one...
– Tuntable
Jan 21...
How to tell if a tag failed to load
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@Rudey Uncaught SyntaxError: Unexpected token '<' (in latest Chrome)
– daleyjem
Feb 29 at 5:25
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send Content-Type: application/json post with node.js
...{
headers: {
'Authorization': 'AccessKey ' + token,
'Content-Type' : 'application/json'
},
uri: 'https://myurl.com/param' + value',
method: 'POST',
json: {'key':'value'}
};
request(options, funct...
What's the _ underscore representative of in Swift References?
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The underscore is a general token used to indicate a discarded value.
In this specific case, it means that the function will be invoked as runAction(argument) instead of runAction(action:argument)
In other contexts it has other similar meaning, e.g. i...
Real life trading API [closed]
... @Jeff Barger: There's some kludge: <elitetrader.com/vb/showthread.php?threadid=17343>
– dirkgently
Apr 13 '09 at 18:00
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How to hide elements without having them take space on the page?
...ility: hidden
visibility:hidden means the tag is not visible, but space is allocated for it on the page.
display:none means completely hides elements with its space. (although you can still interact with it through the DOM)
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