大约有 12,000 项符合查询结果（耗时：0.0293秒） [XML]
Why use def main()? [duplicate]
...
if the content of foo.py
print __name__
if __name__ == '__main__':
print 'XXXX'
A file foo.py can be used in two ways.
imported in another file : import foo
In this case __name__ is foo, the code section does not get execute...
Declare multiple module.exports in Node.js
...
module.js:
const foo = function(<params>) { ... }
const bar = function(<params>) { ... }
//export modules
module.exports = {
foo,
bar
}
main.js:
// import modules
var { foo, bar } = require('module');
// pass your p...
How to pass the value of a variable to the stdin of a command?
...
But why? Also, I can't reproduce any problems: foo1=-; foo2='"'; foo3=\!; cat<<<"$foo1"; cat<<<"$foo2"; cat<<<"$foo3" works fine for me. What exactly do the three " do? AFAIK you are just prepending and appending an empty string.
...
Is it possible to use getters/setters in interface definition?
... to define a get value on an interface, you can use readonly:
interface Foo {
readonly value: number;
}
let foo: Foo = { value: 10 };
foo.value = 20; //error
class Bar implements Foo {
get value() {
return 10;
}
}
but as far as I'm aware, and as others mentioned, there is no way cu...
What is a NullReferenceException, and how do I fix it?
...bers (such as methods) through a null reference. The simplest case:
string foo = null;
foo.ToUpper();
This will throw a NullReferenceException at the second line because you can't call the instance method ToUpper() on a string reference pointing to null.
Debugging
How do you find the source of a Nu...
Will using 'var' affect performance?
...used an exact type. For example, if you have this method:
IList<int> Foo()
{
return Enumerable.Range(0,10).ToList();
}
Consider these three lines of code to call the method:
List<int> bar1 = Foo();
IList<int> bar = Foo();
var bar3 = Foo();
All three compile and execute as exp...
How to create enum like type in TypeScript?
...lor);
console.log(Color[this.myColor]);
}
}
}
var foo = new myModule.MyClass();
This will log:
undefined
2
Blue
Because, at the time of writing this, the Typescript Playground will generate this code:
var myModule;
(function (myModule) {
(function (Color)...
How can I specify a local gem in my Gemfile?
...
I believe you can do this:
gem "foo", path: "/path/to/foo"
share
|
improve this answer
|
follow
|
...
Understanding the difference between __getattr__ and __getattribute__
... @Md.AbuNafeeIbnaZahid getattr is a built-in function. getattr(foo, 'bar') is equivalent to foo.bar.
– wizzwizz4
Jul 3 '18 at 18:11
...
In JavaScript, is returning out of a switch statement considered a better practice than using break?
...at within if/else statements it is best practice to do the following:
var foo = "bar";
if(foo == "bar") {
return 0;
}
else {
return 100;
}
Based on this, the argument could be made that option one is better practice.
In short, there's no clear answer, so as long as your code adheres to ...