大约有 12,000 项符合查询结果（耗时：0.0402秒） [XML]
Class does not implement its superclass's required members
...g loaded from a storyboard:
required init(coder aDecoder: NSCoder!) {
foo = "some string"
bar = 9001
super.init(coder: aDecoder)
}
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Creating your own header file in C
...
foo.h
#ifndef FOO_H_ /* Include guard */
#define FOO_H_
int foo(int x); /* An example function declaration */
#endif // FOO_H_
foo.c
#include "foo.h" /* Include the header (not strictly necessary here) */
int foo(i...
How to loop through all enum values in C#? [duplicate]
Is there a way to loop through the possible values of Foos ?
8 Answers
8
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Java generics T vs Object
...ds of Object.
But with context - if you have a generic class:
MyClass<Foo> my = new MyClass<Foo>();
Foo foo = new Foo();
Then:
Foo newFoo = my.doSomething(foo);
Same code with object
Foo newFoo = (Foo) my.doSomething(foo);
Two advantages:
no need of casting (the compiler hide...
Command not found when using sudo
I have a script called foo.sh in my home folder.
9 Answers
9
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Difference between one-to-many and many-to-one relationship
... Key in another table (the referenced table)
In SQL terms, Bar references Foo
Not the other way around
CREATE TABLE Foo (
Foo CHAR(10) NOT NULL, -- primary key
Name CHAR(30) NOT NULL
CONSTRAINT PK -- constraint name
PRIMARY KEY (Foo) -- pk
)
CREATE TA...
How can I tell gcc not to inline a function?
... asm ("");
Use it like this:
void __attribute__ ((noinline)) foo()
{
...
}
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Ruby arrays: %w vs %W
...pe sequences), while %W quotes like double quotes "".
irb(main):001:0> foo="hello"
=> "hello"
irb(main):002:0> %W(foo bar baz #{foo})
=> ["foo", "bar", "baz", "hello"]
irb(main):003:0> %w(foo bar baz #{foo})
=> ["foo", "bar", "baz", "\#{foo}"]
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Difference between variable declaration syntaxes in Javascript (including global variables)?
...the var statement.
This can be confusing, so let's take a look:
display("foo in window? " + ('foo' in window)); // displays "true"
display("window.foo = " + window.foo); // displays "undefined"
display("bar in window? " + ('bar' in window)); // displays "false"
display("window.bar = " + w...
How can I add to List
..., but you can't.
The wildcard declaration of List<? extends Number> foo3 means that the variable foo3 can hold any value from a family of types (rather than any value of a specific type). It means that any of these are legal assignments:
List<? extends Number> foo3 = new ArrayList<N...