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How to parse a string into a nullable int
...(s, out i)) return i;
return null;
}
Edit @Glenn int.TryParse is "built into the framework". It and int.Parse are the way to parse strings to ints.
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Why can't I initialize non-const static member or static array in class?
...static variables in static methods as workaround:
// header.hxx
#include <vector>
class Class {
public:
static std::vector<int> & replacement_for_initialized_static_non_const_variable() {
static std::vector<int> Static {42, 0, 1900, 1998};
return Static;
...
Set selected radio from radio group with a value
...ly pass the value by itself (without being inside an array), that will result in all values of "mygroup" being set to the value.
$("input[name=mygroup]").val([5]);
Here is the jQuery doc that explains how it works: http://api.jquery.com/val/#val-value
And .val([...]) also works with form element...
How many and which are the uses of “const” in C++?
...e:
struct ScopeGuard {
~ScopeGuard() { } // not virtual
};
template<typename T> struct Derived : ScopeGuard {
T t;
Derived(T t):t(t) { }
~Derived() {
t(); // call function
}
};
template<typename T> Derived<T> MakeGuard(T t) { return Derived<T>...
Reading ePub format
... got the basics (unzipping, parsing XML) down it's not particularly difficult or complex.
You'll need to work out how to download the EPUB, to unzip it somewhere, to parse the manifest and then to display the relevant content.
Some pointers if you're just starting out:
parse xml
unzip
To disp...
Best way to reverse a string
..., not selbaŕesiM seL (note the position of the accent), as would the result of most implementations based on code units (Array.Reverse, etc) or even code points (reversing with special care for surrogate pairs).
using System;
using System.Collections.Generic;
using System.Globalization;
using Sys...
Transpose/Unzip Function (inverse of zip)?
... @JohnP: lists are fine. But if you try to realize the full result all at once (by listifying the result of zip), you might use a lot of memory (because all the tuples must be created at once). If you can just iterate over the result of zip without listifying, you'll save a lot of memory....
Convert char to int in C and C++
...vice you give is directly dangerous to the novice. It will most likely result in Undefined Behavior for their programs that use C standard library character classification functions. Re ref. to @Sayam's answer, he has deleted that answer.
– Cheers and hth. - Alf
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Can I mix Swift with C++? Like the Objective-C .mm files
...h: you expose C, Objective-C and Objective-C++ to Swift using this bridge
<ProductModuleName>-Swift.h: exposes automatically your Swift classes marked with @objc to Objective-C
.h: this is the tricky part, since they are ambiguously used for all flavors of C, ++ or not, Objective or not. When ...
Vim: Move window left/right?
... it possible to “move” a window to the left or right? Eg, similar to <c-w> r or <c-w> x , but left/right instead of up/down?
...