大约有 48,000 项符合查询结果（耗时：0.0681秒） [XML]
Search and Replace with RegEx components in Atom editor
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216
If you Cmd-F and open the search pane, there is a ".*" button at the right side. Click it and n...
Remove all the elements that occur in one list from another
Let's say I have two lists, l1 and l2 . I want to perform l1 - l2 , which returns all elements of l1 not in l2 .
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How do you delete an ActiveRecord object?
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It's destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent associ...
What do (lambda) function closures capture?
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163
Your second question has been answered, but as for your first:
what does the closure captu...
Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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147
Update
data.table v1.9.6+ now supports OP's original attempt and the following answer is no lo...
jQuery show for 5 seconds then hide
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answered Aug 7 '10 at 1:22
Nick Craver♦Nick Craver
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How to use glOrtho() in OpenGL?
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151
Have a look at this picture: Graphical Projections
The glOrtho command produces an "Oblique"...
bash assign default value
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edited Dec 14 '10 at 9:29
answered Dec 14 '10 at 9:23
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Difference between JAX-WS, Axis2 and CXF
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144
The JAX-WS implementation built into the JDK really is just the basic soap stuff. If you need...
how to return index of a sorted list? [duplicate]
...sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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