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Which characters are valid/invalid in a JSON key name?
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Not those. Whatever needs escaping in JavaScript generally needs it in JSON. Best to get it from the horse's mouth, though, at json.org. It takes about one minute to read the entire spec end-to-end.
– Marcelo Cantos
Dec 30 '11 at 4:21
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Django: Display Choice Value
...ing your information via JSON (for instance in a pagination scenario)? Ideally without the overhead of instantiating the Models one by one and calling get_field_display().
– DylanYoung
Mar 23 '17 at 17:34
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Base64 length calculation?
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I explained all this in the answer above: (i) each output char represents 6 bits of input, (ii) 4 output chars therefore represent 4 * 6 = 24 bits, (iii) 24 bits is 3 bytes, (iv) 3 bytes of input therefore result in 4 chars of output, (...
Insert line after first match using sed
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Note the standard sed syntax (as in POSIX, so supported by all conforming sed implementations around (GNU, OS/X, BSD, Solaris...)):
sed '/CLIENTSCRIPT=/a\
CLIENTSCRIPT2="hello"' file
Or on one line:
sed -e '/CLIENTSCRIPT=/a\' -e 'CLIENTSCRIPT2="hello"' file
(-expressions (and t...
Correct approach to global logging in Golang
...d a pointer to that log.Logger?
log.New returns a *Logger which is usually an indication that you should pass the object around as a pointer. Passing it as value would create a copy of the struct (i.e. a copy of the Logger) and then multiple goroutines might write to the same io.Writer concurre...
How is “int* ptr = int()” value initialization not illegal?
...: In ubuntu 11.04 and our own linux flavor, libio.h contains: #if !defined(__cplusplus) \n #define NULL ((void*)0) \n #else \n #define NULL (0) the current version of gcc in ubuntu is 4.5, in our system is 4.0.
– David Rodríguez - dribeas
Nov 9 '11 at 17:33
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Where can I get a “useful” C++ binary search algorithm?
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I don't really understand your comment, since lower_bound can only be used on sorted data. Complexity is lower than using find (see edit).
– Luc Touraille
Jan 15 '09 at 11:02
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How to make a in Bootstrap look like a normal link in nav-tabs?
...around them which messes up the layout. BUT you can fix that by adding a small amount of CSS (see @mcNux answer below)
– Martin CR
Feb 22 at 17:21
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What is the difference between synchronous and asynchronous programming (in node.js)
...ile Node itself is single threaded, there are some task that can run in parallel. For example, File System operations occur in a different process.
That's why Node can do async operations: one thread is doing file system operations, while the main Node thread keeps executing your javascript code....
What's the difference between a catalog and a schema in a relational database?
...l point of view :
The catalog is the place where--among other things--all of the various schemas (external, conceptual, internal) and all of the corresponding mappings (external/conceptual, conceptual/internal) are kept.
In other words, the catalog contains detailed information (sometimes...