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Use of an exclamation mark in a Git commit message via the command line
...rting last commit because I don't like it"!
If you need to include ! mid string, you can use single quotes but if you need to use a literal single quote, you'll need to close your quote, then put the ' outside of the string by escaping it. So, let's say your message is I don't like it! Reverting a...
Fast stable sorting algorithm implementation in javascript
...od is about 20 times slower than native array.sort, see test here for both strings and integers -> jsfiddle.net/QC64j
– davidkonrad
Mar 4 '14 at 15:05
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POST data in JSON format
...on; charset=UTF-8');
// send the collected data as JSON
xhr.send(JSON.stringify(data));
xhr.onloadend = function () {
// done
};
};
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
... "value" and "object" are of type id , so can be any object. Key is once a string, and in the other case an id. One of them seems to retain the object, and the other don't. What else? Which one is for what case?
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What is the scope of variables in JavaScript?
... of the scope chain. In strict mode, these are not permitted.
eval
In eval strings, variables declared using var will be placed in the current scope, or, if eval is used indirectly, as properties on the global object.
Examples
The following will throw a ReferenceError because the namesx, y, and z ha...
postgresql COUNT(DISTINCT …) very slow
...ount int not null), using triggers. But your write performance will suffer and if you update multiple x values in single transaction then you'd need to do this in some explicit order to avoid possible deadlock.
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How do you create optional arguments in php?
... a null check. Literals include arrays (array() or []), booleans, numbers, strings, and null.
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
...o do an upsert, which is what MySQL calls INSERT ... ON DUPLICATE UPDATE and the standard supports as part of the MERGE operation.
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Print array elements on separate lines in Bash?
... the format for the printf function's output. %s means a placeholder for a string argument (in this case the array element) and \n adds a line break after that. Thus, there will be a string and a line break in the output for each element in the array.
– Koja
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Given an RGB value, how do I create a tint (or shade)?
... an RGB value, like 168, 0, 255 , how do I create tints (make it lighter) and shades (make it darker) of the color?
3 Answ...