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C++ STL Vectors: Get iterator from index?
... perfectly legal to do this folowing, according to me:
int main()
{
void foo(const char *);
sdt::vector<char> vec;
vec.push_back('h');
vec.push_back('e');
vec.push_back('l');
vec.push_back('l');
vec.push_back('o');
vec.push_back('/0');
foo(&vec[0]);
}
Of course, either foo must not c...
Why does auto a=1; compile in C?
...nity wiki
9 revs, 2 users 97%Fred Foo
7
...
Can multiple different HTML elements have the same ID if they're different elements?
...ce is undefined behavior, for example, what does document.getElementById("#foo") or $("#foo") return when there are multiple #foos? You'll run into problems being able to work with these elements from JS, pass them as selectors to libraries/APIs/Flash, etc.
– mrooney
...
Does Javascript pass by reference? [duplicate]
...-by-Value
Primitive types are passed by-value:
var num = 123, str = "foo";
function f(num, str) {
num += 1;
str += "bar";
console.log("inside of f:", num, str);
}
f(num, str);
console.log("outside of f:", num, str);
Reassignments inside a function scope are not visible ...
Trim string in JavaScript?
...otype.trim = function() {
return this.replace(/^\s+|\s+$/g, "");
};
" foo bar ".trim(); // "foo bar"
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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...ion;condition;update){
But what about:
var myarray = [];
myarray[100] = "foo";
myarray.push("bar");
Try this:
var myarray = [], i;
myarray[100] = "foo";
myarray.push("bar");
myarray[150] = "baz";
myarray.push("qux");
alert(myarray.length);
for(i in myarray){
if(myarray.hasOwnProperty(i)){ ...
Size of character ('a') in C/C++
...s in C++ required to support function overloading. See this example:
void foo(char c)
{
puts("char");
}
void foo(int i)
{
puts("int");
}
int main()
{
foo('i');
return 0;
}
Output:
char
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...
vs in Generics
... for example, works the opposite way. You can use a concrete IComparer<Foo> directly as an IComparer<Bar> if Bar is a subclass of Foo, because the IComparer<in T> interface is contravariant.
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How to loop through an associative array and get the key? [duplicate]
... by roughly a factor of roughly 3.5 (At least on the box I used to test)
$foo = array(
1 => "Value1",
2 => "Value2",
10 => "Value10"
);
while($bar = each($foo)){
echo $bar[0] . " => " . $bar[1];
}
I would imagine that this is due to the fact the foreach copies the enti...
How do I put a variable inside a string?
... string operator with multiple arguments, one can use a tuple as operand: 'foo %d, bar %d' % (foo, bar).
– fiedl
Aug 8 '14 at 15:38
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