大约有 45,000 项符合查询结果（耗时：0.0670秒） [XML]
Creating a byte array from a stream
...
It really depends on whether or not you can trust s.Length. For many streams, you just don't know how much data there will be. In such cases - and before .NET 4 - I'd use code like this:
public static byte[] ReadFully(Stream...
Specifying column name in a “references” migration
...
Do it manually:
add_column :post, :author_id, :integer
but now, when you create the belongs_to statement, you will have to modify it, so now you have to call
def post
belongs_to :user, :foreign_key => 'author_id'
end
...
Use of def, val, and var in scala
...
This defines a new method called person. You can call this method only without () because it is defined as parameterless method. For empty-paren method, you can call it with or without '()'. If you simply write:
person
then you are calling this method (and if you don't assign the return value,...
How to implement Android Pull-to-Refresh
In Android applications such as Twitter (official app), when you encounter a ListView, you can pull it down (and it will bounce back when released) to refresh the content.
...
What does the Reflect object do in JavaScript?
...tp://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect-object and it sounds similar to the Proxy object apart from the realm and loader functionality.
...
Is there a difference between “==” and “is”?
...
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>> b = a[:]
>>> b is a
False
>>> b == a
True
In your case, the second test only works because Python caches small integer objects, which is an implementation detail. For large...
Disabling the fullscreen editing view for soft keyboard input in landscape?
...vices that use soft keyboards, I want to prevent the fullscreen keyboard editing view (shown below) from appearing when in landscape mode (i.e. I want to see only the soft keyboard itself and my view behind it).
...
iOS: Multi-line UILabel in Auto Layout
I'm having trouble trying to achieve some very basic layout behavior with Auto Layout. My view controller looks like this in IB:
...
How and/or why is merging in Git better than in SVN?
...tributed version control systems shine, is much better merging than in traditional tools like SVN.
Is this actually due to inherent differences in how the two systems work, or do specific DVCS implementations like Git/Mercurial just have cleverer merging algorithms than SVN?
...
How are parameters sent in an HTTP POST request?
...se the multipart/form-data encoding instead, which has a different format. It's more complicated, but you usually don't need to care what it looks like, so I won't show an example, but it can be good to know that it exists.
...