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Why should we typedef a struct so often in C?
...pedef enums and structs results from this problem:
enum EnumDef
{
FIRST_ITEM,
SECOND_ITEM
};
struct StructDef
{
enum EnuumDef MyEnum;
unsigned int MyVar;
} MyStruct;
Notice the typo in EnumDef in the struct (EnuumDef)? This compiles without error (or warning) and is (depending on the lit...
Java List.add() UnsupportedOperationException
...dd() we can use addall()
{ seeAlso.addall(groupDn); }
add adds a single item, while addAll adds each item from the collection one by one. In the end, both methods return true if the collection has been modified. In case of ArrayList this is trivial, because the collection is always modified, but ...
What are the differences between a pointer variable and a reference variable in C++?
...e cumbersome to use, thus violating the language design principle that the best-practice solution should be easier than the alternatives.
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LINQPad [extension] methods [closed]
...ger. To create & change the password, open the "Password manager" menu item in the "File" menu of LinqPad. If there is no password saved when you run the C# code, a password dialog will open up asking you for the password and you have the choice to create and save it on the fly by checking the s...
How to make exe files from a node.js app?
...
The best tool I know is NodeJS tool: zeit/pkg
It is very easy to use (much more than Nexe, just as an example), you can just install in globally:
npm install -g pkg
to create executables for macOS, Linux and Windows:
pkg exam...
Remove empty elements from an array in Javascript
... @AlfaTek - on all apart from the newest browsers #2 will have the best performance, because arrays in JS aren't really arrays. The splice call is really expensive on older browsers because they have to renumber all of the array keys to close up the gap.
– Alnitak
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How to keep keys/values in same order as declared?
...rs (plus the calculated hash). That latter array just happens to store the items in insertion order, and the whole combination actually uses less memory than the implementation used in Python 3.5 and before. See the original idea post by Raymond Hettinger for details.
In 3.6 this was still consider...
Editing dictionary values in a foreach loop
...ing, int>() { { "Other", under.Sum(c => c.Value) } });
foreach (var item in newColStates)
{
Console.WriteLine("{0}:{1}", item.Key, item.Value);
}
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Get int value from enum in C#
... most of the time, I leave it as default value. but you can do enum Test { Item = 1 } and see that 1 == (int)Test.Item is equal.
– Jaider
Jun 28 '12 at 20:47
35
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Can anyone explain IEnumerable and IEnumerator to me? [closed]
...
iterate over the contents of any array type:
// Iterate over an array of items.
int[] myArrayOfInts = {10, 20, 30, 40};
foreach(int i in myArrayOfInts)
{
Console.WriteLine(i);
}
While it might seem that only array types can make use of this construct, the truth of the matter is
any type suppo...