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How can I change an element's text without changing its child elements?
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edited May 23 '17 at 11:54
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answered Nov 5 '10 at 14:40
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What are some common uses for Python decorators? [closed]
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129
I use decorators mainly for timing purposes
def time_dec(func):
def wrapper(*arg):
t ...
How to convert a Java 8 Stream to an Array?
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1222
The easiest method is to use the toArray(IntFunction<A[]> generator) method with an arra...
How to set the current working directory? [duplicate]
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825
Try os.chdir
os.chdir(path)
Change the current working directory to pat...
How can I remove a key and its value from an associative array?
...$array['key-here']);
Example:
$array = array("key1" => "value1", "key2" => "value2");
print_r($array);
unset($array['key1']);
print_r($array);
unset($array['key2']);
print_r($array);
Output:
Array
(
[key1] => value1
[key2] => value2
)
Array
(
[key2] => value2
)
Arr...
Git push to wrong branch
...anch.
git checkout wrong_branch
git revert commitsha1
git revert commitsha2
git checkout right_branch
git cherry-pick commitsha1
git cherry-pick commitsha2
If the commits are grouped together and there are no commits pushed after your dirty commits, you can even use git reset to get that wrong br...
MongoDB: update every document on one field
...ocument. In the Mongo shell, or with any MongoDB client:
$version >= 3.2:
db.foo.updateMany( {}, <update> )
{} is the condition (the empty condition matches any document)
3.2 > $version >= 2.2:
db.foo.update( {}, <update>, { multi: true } )
{} is the condition (the em...
How to get the original value of an attribute in Rails
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243
Before rails 5.1
Appending _was to your attribute will give you the previous value.
For rail...
Undo a Git merge that hasn't been pushed yet
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32 Answers
32
Active
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How I can delete in VIM all text from current line to end of file?
...head hugefile > firstlines
(If you are on Windows you can use the Win32 port of head)
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