大约有 47,000 项符合查询结果（耗时：0.0566秒） [XML]
Linux Shell脚本参数的获取方法 - 脚本技术 - 清泛IT社区，为创新赋能！
...exit xx, 函数return xx）一般0成功,1失败
#!/bin/sh
echo 'file name:' $0
echo 'param num: ' $#
if [ $# -gt 1 ]; then
echo 'the second param:' $2
fi
./param.sh
file name: ./param.sh
param num:  0
./param.sh a
file name: ./param.sh
param num:  1
./param.sh a b
...
优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
...串形势呢？答案是：36进制。36进制数的表达区间是0-9，A-Z(a-z)，恰好满足要求。因此，我的方法是用随机函数生成长整形并转换成36进制，但是一个长整形的36进制位数长度不够，所以就产生2个36进制随机数拼接起来，取前面的...
Const before or const after?
To start you probably know that const can be used to make either an object's data or a pointer not modifiable or both.
7 ...
Use a list of values to select rows from a pandas dataframe [duplicate]
Lets say I have the following pandas dataframe:
1 Answer
1
...
Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe
I see a lot of people in blog posts and here on SO either avoiding or advising against the usage of the Thread class in recent versions of C# (and I mean of course 4.0+, with the addition of Task & friends). Even before, there were debates about the fact that a plain old thread's functionality c...
System.Timers.Timer vs System.Threading.Timer
I have been checking out some of the possible timers lately, and System.Threading.Timer and System.Timers.Timer are the ones that look needful to me (since they support thread pooling).
...
How to call a stored procedure from Java and JPA
I am writing a simple web application to call a stored procedure and retrieve some data.
Its a very simple application, which interacts with client's database. We pass employee id and company id and the stored procedure will return employee details.
...
How to implement a queue using two stacks?
Suppose we have two stacks and no other temporary variable.
20 Answers
20
...
What's a quick way to comment/uncomment lines in Vim?
I have a Ruby code file open in vi, there are lines commented out with # :
46 Answers
...
How to do a scatter plot with empty circles in Python?
In Python, with Matplotlib, how can a scatter plot with empty circles be plotted? The goal is to draw empty circles around some of the colored disks already plotted by scatter() , so as to highlight them, ideally without having to redraw the colored circles.
...