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Why can't I forward-declare a class in a namespace using double colons?
...viously declared) entities. They can't be used to introduce new entities.
And you are in fact "reopening" the namespace to declare new entities. If the class Class is later defined as a member of different namespace - it is a completely different class that has nothing to do with the one you declar...
How to set background color in jquery
... answered Jan 24 '11 at 9:59
jAndyjAndy
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Is it possible only to declare a variable without assigning any value in Python?
...es. If you init something to None, make sure that's what you really want, and assign something more meaningful if you can.
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check if a std::vector contains a certain object? [duplicate]
...erator==. If you need to account for numerical tolerance, use std::find_if and supply a suitable predicate.
– You
Aug 20 '15 at 18:38
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Add a fragment to the URL without causing a redirect?
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No worries - and it makes you wonder why it always returns it.
– alex
Nov 26 '10 at 2:13
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Test if string is a guid without throwing exceptions?
...sid);
}
}
Bottom line: If you need to check if a string is a guid, and you care about performance, use COM Interop.
If you need to convert a guid in String representation to a Guid, use
new Guid(someString);
shar...
PHP Get Site URL Protocol - http vs https
...e function to establish the current site url protocol but I don't have SSL and don't know how to test if it works under https. Can you tell me if this is correct?
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How to access the first property of a Javascript object?
...eates an entire array of all of the object's keys.
– Andrew Mao
Jan 29 '14 at 5:23
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@T Nguyen I ...
Reverse a string in Java
...ep 27 '11 at 12:47
Daniel BrockmanDaniel Brockman
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How can I declare optional function parameters in Javascript? [duplicate]
... body
}
Please keep in mind that ES6 checks the values against undefined and not against truthy-ness (so only real undefined values get the default value - falsy values like null will not default).
With ES5:
function myFunc(a,b) {
b = b || 0;
// b will be set either to b or to 0.
}
This...