大约有 43,100 项符合查询结果（耗时：0.0372秒） [XML]
How do I call a JavaScript function on page load?
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401
If you want the onload method to take parameters, you can do something similar to this:
window....
Searching if value exists in a list of objects using Linq
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471
LINQ defines an extension method that is perfect for solving this exact problem:
using System.L...
How do I convert a pandas Series or index to a Numpy array? [duplicate]
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To get a NumPy array, you should use the values attribute:
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c']); df
A B
a 1 4
b 2 5
c 3 6
In [2]: df.index.values
Out[2]: array(['a', 'b', 'c'], dtype=object)
This accesses how the data is already ...
Generic List - moving an item within the list
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10 Answers
10
Active
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How to clone git repository with specific revision/changeset?
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15 Answers
15
Active
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How to redirect stderr and stdout to different files in the same line in script?
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Just add them in one line command 2>> error 1>> output
However, note that >> is for appending if the file already has data. Whereas, > will overwrite any existing data in the file.
So, command 2> error 1> output if you do not want to append.
Ju...
Plurality in user messages
.... The correct way of doing this is:
string message = ( noofitemsselected==1 ?
"You have selected " + noofitemsselected + " item. Are you sure you want to delete it?":
"You have selected " + noofitemsselected + " items. Are you sure you want to delete them?"
);
This is because different langua...
How to stop text from taking up more than 1 line?
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edited Jan 20 '18 at 21:02
diralik
2,86222 gold badges1313 silver badges3838 bronze badges
an...
How to undo a git pull?
...plicit than the other answer:
git pull
whoops?
git reset --keep HEAD@{1}
Versions of git older than 1.7.1 do not have --keep. If you use such version, you could use --hard - but that is a dangerous operation because it loses any local changes.
To the commenter
ORIG_HEAD is previous sta...
Ruby ampersand colon shortcut [duplicate]
...foo }
something(&:foo)
Also, to_proc on Symbol is implemented in Ruby 1.8.7 and 1.9, so it is in fact a "ruby thing".
So, to sum up: & calls to_proc on the object and passes it as a block to the method, and Ruby implements to_proc on Symbol.
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