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How to rename with prefix/suffix?
...ly be short and simple for this. For example, to rename all *.jpg to prefix_*.jpg in the current directory:
for filename in *.jpg; do mv "$filename" "prefix_$filename"; done;
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Looping through a hash, or using an array in PowerShell
... how:
$hash = @{
a = 1
b = 2
c = 3
}
$hash.Keys | % { "key = $_ , value = " + $hash.Item($_) }
Output:
key = c , value = 3
key = a , value = 1
key = b , value = 2
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How to convert String to long in Java?
I got a simple question in Java: How can I convert a String that was obtained by Long.toString() to long ?
9 Answers
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Map function in MATLAB?
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edited Apr 10 '18 at 15:05
answered Jun 11 '09 at 19:48
g...
Count all occurrences of a string in lots of files with grep
I have a bunch of log files. I need to find out how many times a string occurs in all files.
15 Answers
...
Benchmarking (python vs. c++ using BLAS) and (numpy)
... is probably broken.)
Your CalcTime function in C++ seems to have a sign error. ... + ((double)start.tv_usec)) should be instead ... - ((double)start.tv_usec)). Perhaps your benchmark also has other bugs, e.g., comparing between different BLAS libraries, or different BLAS settings such as number o...
How to avoid .pyc files?
...terpreter. This setting is available
to Python programs as the
sys.dont_write_bytecode variable, and
Python code can change the value to
modify the interpreter’s behaviour.
Update 2010-11-27: Python 3.2 addresses the issue of cluttering source folders with .pyc files by introducing a spe...
Fade/dissolve when changing UIImageView's image
...eg. [completion copy]) without checking its validity, this will lead to an error. So you should always use objective-c's nil when setting a block to be empty.
– Mr. T
Jan 26 '13 at 0:11
...
Opening a folder in explorer and selecting a file
...s method to get it to work in all cases:
[DllImport("shell32.dll", SetLastError = true)]
public static extern int SHOpenFolderAndSelectItems(IntPtr pidlFolder, uint cidl, [In, MarshalAs(UnmanagedType.LPArray)] IntPtr[] apidl, uint dwFlags);
[DllImport("shell32.dll", SetLastError = true)]
public st...
初创公司如何利用社交媒体实现营销效果最大化？ - 资讯 - 清泛网 - 专注C/C...
...首先要评估一下自己的能力，不妨来看看下面这几类：
l 每周有多少时间可以花在社交媒体管理上：时间非常重要，因此你需要了解自己应该优先处理哪些社交媒体，有多少渠道要去管理。高效的社交媒体管理意味着重要的工...