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Quick Way to Implement Dictionary in C
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why is here hashval = *s + 31 * hashval; exactly 31 and not anything else?
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Sep 25 '14 at 8:50
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Passing by reference in C
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Because you're passing the value of the pointer to the method and then dereferencing it to get the integer that is pointed to.
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Android: I am unable to have ViewPager WRAP_CONTENT
...e biggest of its actual children, that is, only the currently visible item and the directly adjacent ones. Calling setOffscreenPageLimit(total number of children) on the ViewPager solves this and results in a ViewPager whose size is set to the biggest of all its items and never resizes. 2. WebViews...
Call one constructor from another
...adonly field needs to be set, the code which sets it could call the method and assign the field using the return value, but any number of fields may be written directly with ref. Also, in case it matters, changes made via the ref parameter take place immediately, even before the function returns, w...
Get the index of the nth occurrence of a string?
...if you think about it. (IndexOf will return as soon as it finds the match, and you'll keep going from where it left off.)
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Variable declared in for-loop is local variable?
...laration
(Section 8.5.1) is the block in which the declaration occurs.
and
The scope of a local variable declared in a for-initializer of a for
statement (Section 8.8.3) is the for-initializer, the for-condition,
the for-iterator, and the contained statement of the for statement.
And a...
Why does auto a=1; compile in C?
... old C keyword that means "local scope". auto a is the same as auto int a, and because local scope is the default for a variable declared inside a function, it's also the same as int a in this example.
This keyword is actually a leftover from C's predecessor B, where there were no base types: every...
Sort Go map values by keys
...erating over a map with a range loop, the iteration order is
not specified and is not guaranteed to be the same from one iteration
to the next. Since Go 1 the runtime randomizes map iteration order, as
programmers relied on the stable iteration order of the previous
implementation. If you require a ...
Why can I initialize a List like an array in C#?
...method named Add(...)
What happens is the default constructor is called, and then Add(...) is called for each member of the initializer.
Thus, these two blocks are roughly identical:
List<int> a = new List<int> { 1, 2, 3 };
And
List<int> temp = new List<int>();
temp.Ad...
private final static attribute vs private final attribute
...ce a static variable without having ever created an instances of the type, and any code referring to the variable is referring to the exact same data. Compare this with an instance variable: in that case, there's one independent version of the variable per instance of the class. So for example:
Tes...