大约有 40,000 项符合查询结果（耗时：0.0559秒） [XML]
Hard reset of a single file
...hich will update both the working copy of my-file.txt and its state in the index with that from HEAD.
-- basically means: treat every argument after this point as a file name. More details in this answer. Thanks to VonC for pointing this out.
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Last non-empty cell in a column
...l-Shift-Enter after you type or paste it in. The below is for column A:
=INDEX(A:A,MAX((A:A<>"")*(ROW(A:A))))
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Dialog to pick image from gallery or from camera
... cursor = managedQuery(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
Atlast, finally add the camera and write external storage permission to AndroidManife...
How do I force a DIV block to extend to the bottom of a page even if it has no content?
...tp://www.brunildo.org/test/html_body_11b.html
http://www.brunildo.org/test/index.html
I also recommend going to http://quirksmode.org/
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How to count certain elements in array?
...the body of the loop anyway if you need to capture or clone your iteration index or value. For-loops are more efficient generally, but sometimes you need a closure.)
The most readable way:
[....].filter(x => x==2).length
(We could have written .filter(function(x){return x==2}).length instead)...
Python: Select subset from list based on index set
...equired indices, this should be the fastest:
property_asel = [ property_a[index] for index in good_indices ]
This means the property selection will only do as many rounds as there are true/required indices. If you have a lot of property lists that follow the rules of a single tags (true/false) li...
How do I overload the [] operator in C# [duplicate]
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Why is it that every time I need to implement an index operator, I have to look it up? And each time I end up on this answer... wish I could vote it up multiple times :)
– DSO
Dec 31 '11 at 0:52
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Looping through the content of a file in Bash
...|| [ -n "$p" ]
do
printf '%s\n' "$p"
done < peptides.txt
Exceptionally, if the loop body may read from standard input, you can open the file using a different file descriptor:
while read -u 10 p; do
...
done 10<peptides.txt
Here, 10 is just an arbitrary number (different from 0, 1, ...
Using R to download zipped data file, extract, and import data
...ge "downloader" found at http://cran.r-project.org/web/packages/downloader/index.html . Much easier.
download(url, dest="dataset.zip", mode="wb")
unzip ("dataset.zip", exdir = "./")
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Aborting a stash pop in Git
...y.
The reverse merge requires that all current changes be pushed into the index:
git add -u
Then invert the merge-recursive that was done by git stash apply:
git merge-recursive stash@{0}: -- $(git write-tree) stash@{0}^1
Now you will be left with just the non-stash changes. They will be i...