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All possible array initialization syntaxes
...ns that can be assigned with the var keyword can be passed as arguments.
Foo(new int[2])
Foo(new int[2] { 1, 2 })
Foo(new int[] { 1, 2 })
Foo(new[] { 1, 2 })
Foo({ 1, 2 }) is not compilable
Foo(new int[0])
Foo(new int[] { })
Foo({}) is not compilable
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Access index of the parent ng-repeat from child ng-repeat
I want to use the index of the parent list (foos) as an argument to a function call in the child list (foos.bars).
6 Answer...
Why doesn't a python dict.update() return the object?
...y is that otherwise, you may get undesirable side effects. Consider
bar = foo.reverse()
If reverse (which reverses the list in-place) would also return the list, users may think that reverse returns a new list which gets assigned to bar, and never notice that foo also gets modified. By making rev...
Which regular expression operator means 'Don't' match this character?
...ch a, b, c or 0: [^a-c0]
The latter: match any three-letter string except foo and bar:
(?!foo|bar).{3}
or
.{3}(?<!foo|bar)
Also, a correction for you: *, ? and + do not actually match anything. They are repetition operators, and always follow a matching operator. Thus, a+ means match one or ...
Can you make just part of a regex case-insensitive?
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@NonaUrbiz: Because the expression (?i)foobar is more readable than [Ff][Oo]{2}[Bb][Aa][Rr]
– Thanatos
Oct 25 '12 at 0:29
1
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Django: Get an object form the DB, or 'None' if nothing matches
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There are two ways to do this;
try:
foo = Foo.objects.get(bar=baz)
except model.DoesNotExist:
foo = None
Or you can use a wrapper:
def get_or_none(model, *args, **kwargs):
try:
return model.objects.get(*args, **kwargs)
except model.DoesNo...
What is the “volatile” keyword used for?
...e visible to other processors.
Consider the following example:
something.foo = new Thing();
If foo is a member variable in a class, and other CPUs have access to the object instance referred to by something, they might see the value foo change before the memory writes in the Thing constructor ar...
ASP.NET MVC: Custom Validation by DataAnnotation
...ength(20, "Bar", "Baz", ErrorMessage = "The combined minimum length of the Foo, Bar and Baz properties should be longer than 20")]
public string Foo { get; set; }
public string Bar { get; set; }
public string Baz { get; set; }
}
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If table exists drop table then create it, if it does not exist just create it
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Just use DROP TABLE IF EXISTS:
DROP TABLE IF EXISTS `foo`;
CREATE TABLE `foo` ( ... );
Try searching the MySQL documentation first if you have any other problems.
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Get name of object or class
...ill return empty string, if used on objects declared through variable: var Foo = function() {};.
– Aleksandr Makov
Feb 26 '14 at 14:56
3
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