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How to do associative array/hashing in JavaScript
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@Leo console.log({A:'B',C:'D'}[foo]) should give you A B.
– ychaouche
Jan 20 '19 at 14:07
2
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How do I create an array of strings in C?
...); // where aString is either an array or pointer to char
strcpy(strs[1], "foo");
You can add a list of initializers as well:
char strs[NUMBER_OF_STRINGS][STRING_LENGTH+1] = {"foo", "bar", "bletch", ...};
This assumes the size and number of strings in the initializer match up with your array di...
Writing a compiler in its own language
Intuitively, it would seems that a compiler for language Foo cannot itself be written in Foo. More specifically, the first compiler for language Foo cannot be written in Foo, but any subsequent compiler could be written for Foo .
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C# code to validate email address
...ValidateSomeEmails
{
static void Main(string[] args)
{
var foo = new EmailAddressAttribute();
bool bar;
bar = foo.IsValid("someone@somewhere.com"); //true
bar = foo.IsValid("someone@somewhere.co.uk"); //true
bar = foo.IsValid("someone+tag...
Stash only one file out of multiple files that have changed with Git?
...ff:
test_expect_success 'stash with multiple pathspec arguments' '
>foo &&
>bar &&
>extra &&
git add foo bar extra &&
git stash push -- foo bar &&
test_path_is_missing bar &&
test_path_is_missing foo &&...
Unmarshaling nested JSON objects
...halJSON func.
https://play.golang.org/p/dqn5UdqFfJt
type A struct {
FooBar string // takes foo.bar
FooBaz string // takes foo.baz
More string
}
func (a *A) UnmarshalJSON(b []byte) error {
var f interface{}
json.Unmarshal(b, &f)
m := f.(map[string]interface{})
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throwing exceptions out of a destructor
...tructor. The output is performed by the guard object's
destructor unless foo() throws (in which case the number of uncaught
exceptions in the destructor is greater than what the constructor
observed)
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Can I call an overloaded constructor from another constructor of the same class in C#?
...r in C# is immediately after ":" after the constructor.
for example
class foo
{
public foo(){}
public foo(string s ) { }
public foo (string s1, string s2) : this(s1) {....}
}
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Elegant way to combine multiple collections of elements?
...s, each containing objects of the same type (for example, List<int> foo and List<int> bar ). If these collections were themselves in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
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How do you read from stdin?
...eed to read from sys.stdin, for example, if you pipe data to stdin:
$ echo foo | python -c "import sys; print(sys.stdin.read())"
foo
We can see that sys.stdin is in default text mode:
>>> import sys
>>> sys.stdin
<_io.TextIOWrapper name='<stdin>' mode='r' encoding='UTF-8'...