大约有 44,615 项符合查询结果（耗时：0.0401秒） [XML]
Why doesn't this code simply print letters A to Z?
...
From the docs:
PHP follows Perl's convention when dealing with arithmetic operations on character variables and not C's.
For example, in Perl 'Z'+1 turns into 'AA', while in C 'Z'+1 turns into '[' ( ord('Z') == 90, ord('[') == 91 ).
Note that character variables can be incremented bu...
Is there a “do … while” loop in Ruby?
...
CAUTION:
The begin <code> end while <condition> is rejected by Ruby's author Matz. Instead he suggests using Kernel#loop, e.g.
loop do
# some code here
break if <condition>
end
Here's an email exchange in 23 Nov 2005 where Matz states:
|> Don't...
Why do I need an IoC container as opposed to straightforward DI code? [closed]
I've been using Dependency Injection (DI) for a while, injecting either in a constructor, property, or method. I've never felt a need to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container.
...
Downloading a Google font and setting up an offline site that uses it
I have a template and it has a reference to a Google font like this:
11 Answers
11
...
“tag already exists in the remote" error after recreating the git tag
...
Edit, 24 Nov 2016: this answer is apparently popular, so I am adding a note here. If you replace a tag on a central server, anyone who has the old tag—any clone of that central-server repository that already has the tag—co...
How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
...aken a look under the hood at the jQuery 1.4 source code and noticed how it's encapsulated in the following way:
5 Answer...
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...s> element, I would like to load an image file (PNG, JPEG, etc.), draw it to the canvas completely transparently, and then fade it in. I have figured out how to load the image and draw it to the canvas, but I don't know how to change its opacity once it as been drawn.
...
What's the difference between git clone --mirror and git clone --bare
The git clone help page has this to say about --mirror :
7 Answers
7
...
How to have conditional elements and keep DRY with Facebook React's JSX?
...JSX? Here is an example using a banner that should be in the component if it has been passed in. What I want to avoid is having to duplicate HTML tags in the if statement.
...
Write a number with two decimal places SQL server
How do you write a number with two decimal places for sql server?
10 Answers
10
...