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Looking for a clear definition of what a “tokenizer”, “parser” and...
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A tokenizer breaks a stream of text into tokens, usually by looking for whitespace (tabs, spaces, new lines).
A lexer is basically a tokenizer, but it usually attaches extra context to the tokens -- this token is a number, that token is a string literal, this ...
How to use a filter in a controller?
...ways to do this.
Let's assume you have the following simple filter, which converts a string to uppercase, with a parameter for the first character only.
app.filter('uppercase', function() {
return function(string, firstCharOnly) {
return (!firstCharOnly)
? string.toUpperCas...
iOS 7 status bar back to iOS 6 default style in iPhone app?
...tionController will alter the height of its UINavigationBar to either 44 points or 64 points, depending on a rather strange and undocumented set of constraints. If the UINavigationController detects that the top of its view’s frame is visually contiguous with its UIWindow’s top, then it draws it...
Iterating over every two elements in a list
...turns a zip object in Python 3, which is not subscriptable. It needs to be converted to a sequence (list, tuple, etc.) first, but "not working" is a bit of a stretch.
– vaultah
Feb 25 '17 at 14:03
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Linq code to select one item
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I don't think this is the intended behavior. This Select instruction returns (actually don't, but it selects for return) a collection of bool, one for each element of Items, the first of what is returned as item, that becomes simply a bool. Use the so...
Overriding the java equals() method - not working?
I ran into an interesting (and very frustrating) issue with the equals() method today which caused what I thought to be a well tested class to crash and cause a bug that took me a very long time to track down.
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What is the difference between the Facade and Adapter Pattern?
...been reading both definitions and they seem quite the same. Could anyone point out what are their differences?
16 Answers
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Are +0 and -0 the same?
...y to fix this is to do smth like:
if (x==0) x=0;
or just:
x+=0;
This converts the number to +0 in case it was -0.
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Named placeholders in string formatting
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I found it disappointing that the library doesn't throw if keys are not found, however, if you use the default syntax (${arg}) instead of the custom one above (%(arg)) then the regex will not compile, which is the desired effect.
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Media Player called in state 0, error (-38,0)
I am currently trying to design a simple app that streams an internet radio station. I have the URL for the station and am setting up the Media Player like
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