大约有 40,000 项符合查询结果（耗时：0.0529秒） [XML]
“new” keyword in Scala
...
Is it when we try to instantiate java objects only?
Not at all. There is two general cases when you ommit new in scala.
With singleton objects (that are oftenly used to store static functions and as a kind of factory similar to what you may seen in java):
scala> object LonelyGuy ...
Remove ALL white spaces from text
... other RegEx modifiers available in JavaScript here.
If you want to match all whitespace, and not just the literal space character, use \s instead:
.replace(/\s/g,'')
share
|
improve this answer
...
Append value to empty vector in R?
... avoided".
As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop.
Here are several ways to append values to a vector. All of them are discouraged.
Appending to a vector in a loop
# one way
for (i in 1:le...
How to print Unicode character in Python?
I want to make a dictionary where English words point to Russian and French translations.
9 Answers
...
Set up adb on Mac OS X
...ers/${USER}/Library/Android/sdk/platform-tools/" >> ~/.bash_profile && source ~/.bash_profile
If you put the android-sdks folder in other directory, replace the path with the directory android-sdks/platform-tools is in
...
How do I format a number in Java?
...
Actually, String.format is like C's printf. It can format several kinds of data types.
– cesarse
Jul 2 '13 at 13:36
...
Shrink a YouTube video to responsive width
...r on https://css-tricks.com/NetMag/FluidWidthVideo/Article-FluidWidthVideo.php
The problem with previous solution is that you need to have special div around video code, which is not suitable for most uses. So here is JavaScript solution without special div.
// Find all YouTube videos - RESIZE YOU...
Prevent Caching in ASP.NET MVC for specific actions using an attribute
...C 3 application. This application requests records through jQuery. jQuery calls back to a controller action that returns results in JSON format. I have not been able to prove this, but I'm concerned that my data may be getting cached.
...
How to change value of process.env.PORT in node.js?
...t number in node process while running node JS programme:
set PORT =3000 && node file_name.js
The set port can be accessed in the code as
process.env.PORT
share
|
improve this answer
...
How to make a class conform to a protocol in Swift?
...
Xcode 9, helps to implement all mandatory methods of Swift Datasource & Delegates.
Here is example of UITableViewDataSource:
Shows warning/hint to implement mandatory methods:
Click on 'Fix' button, it will add all mandatory methods in code:
...