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What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...your parameters are T[] you're safe about custom lower bound arrays:
void foo<T>(T[] array) { }
void test() {
// This will throw InvalidCastException, cannot convert Int32[] to Int32[*]
foo((int)Array.CreateInstance(typeof(int), new int[] { 1 }, new int[] { 1 }));
}
Validate Parame...
What's the $unwind operator in MongoDB?
..." } ,
{ author :"sam" , text : "this is bad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 items, in this case being "fun", "good" and "fun".
What $unwind does is allow you to peel off a document for each element and returns that resulting document.
To think ...
What are inline namespaces for?
...r symbol name only.
Consider this example:
Suppose you write a function Foo that takes a reference to an object say bar and returns nothing.
Say in main.cpp
struct bar;
void Foo(bar& ref);
If you check your symbol name for this file after compiling it into an object.
$ nm main.o
T__ Z1f...
Correct way to delete cookies server-side
...se, have a look at cookies from other domains. For example, after deleting foo=bar; domain=www.example.com, an other cookie foo=qux; domain=.example.com will be used.
– Lekensteyn
Jun 26 '13 at 13:23
...
What's the rationale for null terminated strings?
...
char *temp = "foo bar"; is a valid statement in C... hey! isn't that a string? isn't it null terminated?
– Yanick Rochon
Dec 11 '10 at 20:22
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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...signing by reference. But you don't use it like you would in base :
DT[3,"foo"] := newvalue # not like this
you use it like this :
DT[3,foo:=newvalue] # like this
That changed DT by reference. Say you add a new column new by reference to the data object, there is no need to do this :
DT...
Custom HTTP headers : naming conventions
... It's a matter of preference and name-spacing; concerns about "X-ClientDataFoo" being supported by any proxy or vendor without the "X" are clearly misplaced.
There's nothing special or magical about the "X-" prefix, but it helps to make it clear that it is a custom header. In fact, RFC-6648 et al h...
Type-juggling and (strict) greater/lesser-than comparisons in PHP
...$a <= $b and $b <= $a does not follow $a == $b:
var_dump(NAN <= "foo"); // bool(true)
var_dump("foo" <= NAN); // bool(true)
var_dump(NAN == "foo"); // bool(false)
PHP's <= operator is not transitive, i.e. from $a <= $b and $b <= $c does not follow $a <= $c (Example same as ...
Sorting dictionary keys in python [duplicate]
...
[v[0] for v in sorted(foo.items(), key=lambda(k,v): (v,k))]
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Determining if a variable is within range?
...
if you still wanted to use ranges...
def foo(x)
if (1..10).include?(x)
puts "1 to 10"
elsif (11..20).include?(x)
puts "11 to 20"
end
end
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