大约有 48,000 项符合查询结果（耗时：0.0624秒） [XML]
Constructor of an abstract class in C#
... possible to write constructor for an abstract class in C#?
As far as I know we can't instantiate an abstract class.. so what is it for?
You can't instantiate the class, right?
...
Why do we need boxing and unboxing in C#?
...e type).
Think of it like this. You have a variable o of type object. And now you have an int and you want to put it into o. o is a reference to something somewhere, and the int is emphatically not a reference to something somewhere (after all, it's just a number). So, what you do is this: you make...
How to get the full url in Express?
...'X-Forwarded-Protocol') is set and has the value https, in which case you know that's your protocol
The host comes from req.get('host') as Gopal has indicated
Hopefully you don't need a non-standard port in your URLs, but if you did need to know it you'd have it in your application state because it...
What's the difference between window.location= and window.location.replace()?
...)
This code is perfectly correct syntax-wise, logic wise, type-wise
you know the only thing wrong with it?
it has location instead of location.href
what about this
var mystring = location = "#/some/spa/route"
what is the value of mystring? does anyone really know without doing some test. No ...
Difference between declaring variables before or in loop?
...: .067 sec
To my surprise B was slightly faster.
As fast as computers are now its hard to say if you could accurately measure this.
I would code it the A way as well but I would say it doesn't really matter.
share
...
Where can I locate themes for VS2012
...
Not that I know of Richard :(
– bbqchickenrobot
Jun 12 '13 at 18:00
...
NPM global install “cannot find module”
...hy this has made them incapable of finding installed modules. The fix for now is to point NODE_PATH at the right directory:
export NODE_PATH=/opt/lib/node_modules
My require('promised-io/promise') now succeeds.
share
...
Undoing a git rebase
Does anybody know how to easily undo a git rebase?
18 Answers
18
...
Create a string of variable length, filled with a repeated character
... new repeat function built into String.prototype handles this now (ES6+)
– AlexMA
Oct 18 '16 at 18:05
...
How to use a variable to specify column name in ggplot
...
From the release notes of ggplot2 V3.0.0 :
aes() now supports quasiquotation so that you can use !!, !!!, and
:=. This replaces aes_() and aes_string() which are now
soft-deprecated (but will remain around for a long time).
The idiomatic way now would be to convert ...