大约有 7,000 项符合查询结果（耗时：0.0230秒） [XML]
How can I tell when a MySQL table was last updated?
In the footer of my page, I would like to add something like "last updated the xx/xx/200x" with this date being the last time a certain mySQL table has been updated.
...
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...
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
|
...
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...
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 ...