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What is a Context Free Grammar?
... the language described by a grammar. Grammars will say how to transform a start symbol (usually S) into some string of symbols. A grammar for the language given before is:
S -> BBB
B -> 0
B -> 1
The way to interpret this is to say that S can be replaced by BBB, and B can be replaced by ...
Given an emacs command name, how would you find key-bindings ? (and vice versa)
...isearch-forward) has an extensive key map which often unknown. e.g. M-s o starts occur using the current search string, I didn't know about this for many many years of using Emacs. Having which-key around has helped me discover many rare gems in Emacs.
https://github.com/justbur/emacs-which-key
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Do I encode ampersands in ?
...e them in href values (and there is a small risk of making mistakes if you start escaping them).
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What's the best way to put a c-struct in an NSArray?
...sterious crashes, depending on when the function's stack is overwritten. I started to elaborate on how my solution might be used, but realised that I was reimplementing Objective-C's own reference-counting. My apologies for the compact code -- it's not a matter of aptitude but laziness. No point in ...
URL matrix parameters vs. query parameters
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The ? starts the query parameter part of the request. Query parameters are the most common type of URL parameters, as opposed to matrix parameters. The slash before the question mark makes sure that the query parameter page doesn't...
Best way to get child nodes
...ementChild is not necessarily safe in non-IE browsers either: Firefox only started supporting it in version 3.5.
– Tim Down
Apr 30 '12 at 9:49
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How do I make a textarea an ACE editor?
...orked - just like the snippet does. if you need help debugging you should start a new question.
– billynoah
Feb 14 '18 at 1:41
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How to loop through file names returned by find?
... …code using "$file"
done
Three reasons:
For the for loop to even start, the find must run to completion.
If a file name has any whitespace (including space, tab or newline) in it, it will be treated as two separate names.
Although now unlikely, you can overrun your command line buffer. Ima...
Is there a constraint that restricts my generic method to numeric types?
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Very cool and I was just about to start using it then I remembered how dependent on Resharper I am for refactoring and you can't do rename refactor through the T4 template. It's not critical but worth considering.
– bradgonesurfing
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addEventListener vs onclick
...e you'll have to move to JS-based event listeners, so you may as well just start there. Don't use inline events.
jQuery and other javascript frameworks encapsulate the different browser implementations of DOM level 2 events in generic models so you can write cross-browser compliant code without hav...