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Hidden Features of MySQL
...rrent connections, but self compiled binaries often have less of a limit.
Set table_cache to match the number of your open tables and concurrent connections. Watch the open_tables value and if it is growing quickly you will need to increase its size.
Note:
The 2 previous parameters may require a...
Which encoding opens CSV files correctly with Excel on both Mac and Windows?
...aling with Excel. Since its basically Microsofts own proprietary character set, one can assume it will work on both the Mac and the Windows version of MS-Excel. Both versions at least include a corresponding "File origin" or "File encoding" selector which correctly reads the data.
Depending on your...
ByteArray 扩展 - 字节数组处理工具 · App Inventor 2 中文网
...yteArray1.AddByte 67 // 添加字符 'C'
// 获取数组长度
set Label1.Text to "数组长度: " & ByteArray1.Size
// 转换为十六进制字符串
set Label2.Text to "十六进制: " & ByteArray1.ToString
读写整数
when Button2.Click
do
// ...
How to create a Custom Dialog box in android?
...avedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.custom_dialog);
yes = (Button) findViewById(R.id.btn_yes);
no = (Button) findViewById(R.id.btn_no);
yes.setOnClickListener(this);
no.setOnClickListener(this);
}
@Override
public...
How do I programmatically determine if there are uncommitted changes?
... For example, if file was changed between HEAD~ and HEAD, then after git reset HEAD~ -- file, it will still exit 0 even though there are staged changes present in the index (wt == HEAD, but index != HEAD).
– Chris Johnsen
Oct 7 '10 at 8:03
...
How to easily truncate an array with JavaScript?
...plice(-2,2); // a1=[2,4], a2=[6,8]
If you're asking how to retrieve a subset of an array without modifying the original, then use slice.
var a1 = [2,4,6,8];
var a2 = a1.slice(-2); // a1=[2,4,6,8], a2=[6,8]
Just remember splice modifies, slice accesses. Negative numbers as first arg indicate ind...
Using Python's os.path, how do I go up one directory?
...lpath(dirname(__file__))), 'templates')
Update:
If you happen to "copy" settings.py through symlinking, @forivall's answer is better:
~user/
project1/
mysite/
settings.py
templates/
wrong.html
project2/
mysite/
settings.py -&...
Find duplicate lines in a file and count how many time each line was duplicated?
Suppose I have a file similar to the following:
7 Answers
7
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Text Editor which shows \r\n? [closed]
I'm looking for a text editor that can show me the actual carriage returns and newlines.
17 Answers
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How to count the frequency of the elements in an unordered list?
...
It's faster using a set: {x:a.count(x) for x in set(a)}
– stenci
Feb 17 '16 at 17:55
45
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