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git: Show index diff in commit message as comment
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149
The --verbose (or -v) flag for git commit will display the diff of what would be committed:
g...
Check whether a string contains a substring
...ns substring you can use the index function:
if (index($str, $substr) != -1) {
print "$str contains $substr\n";
}
It will return the position of the first occurrence of $substr in $str, or -1 if the substring is not found.
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Is it possible to for SQL Output clause to return a column not being inserted?
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196
You can do this by using MERGE instead of insert:
so replace this
INSERT INTO ReportOption (...
Generate a Hash from string in Javascript
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816
Object.defineProperty(String.prototype, 'hashCode', {
value: function() {
var hash = 0, i...
How can we programmatically detect which iOS version is device running on? [duplicate]
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10 Answers
10
Active
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How can I generate a diff for a single file between two branches in github
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91
GitHub only exposes the way to show diff between two commits.
Provided those tags actually point...
How do I byte-compile everything in my .emacs.d directory?
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213
C-u 0 M-x byte-recompile-directory
will compile all the .el files in the directory and in all ...
Convert a row of a data frame to vector
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156
When you extract a single row from a data frame you get a one-row data frame. Convert it to a...
MySQL: Set user variable from result of query
...but you need to move the variable assignment into the query:
SET @user := 123456;
SELECT @group := `group` FROM user WHERE user = @user;
SELECT * FROM user WHERE `group` = @group;
Test case:
CREATE TABLE user (`user` int, `group` int);
INSERT INTO user VALUES (123456, 5);
INSERT INTO user VALUES...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
... ) 和数据区域。原文译自： http://www.codeproject.com/Articles/138888/Getting-the-File-System-Image-and-Deleted-Data-Recovery
Download FleshCloner.zip - 12.8 KB
大多数的 flash驱动器的文件系统都采用 FAT 格式。下面介绍下这种系统格式， FAT 系统由三个...