大约有 31,000 项符合查询结果（耗时：0.0381秒） [XML]
What is the difference between Ruby 1.8 and Ruby 1.9
...s p[1,2,3]
Ruby 1.8.6
p = lambda {|a,b,c| a+b+c}
puts p.call(1,2,3)
Complex Numbers
Ruby 1.9
Complex(3,4) == 3 + 4.im
Decimal Is Still Not The Default
Ruby 1.9
irb(main):001:0> 1.2-1.1
=> 0.0999999999999999
Regex “Properties”
Ruby 1.9
/\p{Space}/
Ruby 1.8.6
/[:space...
Adding and removing style attribute from div with jquery
...
add a comment
|
21
...
How to compile without warnings being treated as errors?
The problem is that the same code that compiles well on Windows, is unable to compile on Ubuntu. Every time I get this error:
...
Why does javascript map function return undefined?
...
add a comment
|
24
...
Reading output of a command into an array in Bash
I need to read the output of a command in my script into an array. The command is, for example:
3 Answers
...
In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
...
Try this on the PowerShell command line:
. .\MyFunctions.ps1
A1
The dot operator is used for script include.
share
|
improve this answer
|...
Getting pids from ps -ef |grep keyword
...s you include the -f options. That makes pgrep match keywords in the whole command (including arguments) instead of just the process name.
pgrep -f keyword
From the man page:
-f The pattern is normally only matched against the process name. When -f is set, the full command line is u...
Method Resolution Order (MRO) in new-style classes?
...rucial difference between resolution order for legacy vs new-style classes comes when the same ancestor class occurs more than once in the "naive", depth-first approach -- e.g., consider a "diamond inheritance" case:
>>> class A: x = 'a'
...
>>> class B(A): pass
...
>>>...
JUnit tests pass in Eclipse but fail in Maven Surefire
... edited May 23 '17 at 12:34
Community♦
111 silver badge
answered Mar 22 '12 at 15:22
simonsimon
...
Watermark / hint text / placeholder TextBox
...x:Class="WaterMarkTextBoxDemo.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WaterMarkTextBoxDemo"
Height="200" Width="400">
<Window.Resources>
<Sol...