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Django select only rows with duplicate field values
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193
Try:
from django.db.models import Count
Literal.objects.values('name')
.annotate...
dispatch_after - GCD in Swift?
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I recommend using @matt's really nice delay function.
EDIT 2:
In Swift 3, there will be new wrappers for GCD. See here: https://github.com/apple/swift-evolution/blob/master/proposals/0088-libdispatch-for-swift3.md
The original example would be written as follows in Swift 3:
let deadlineTime = ...
PHP cURL not working - WAMP on Windows 7 64 bit
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309
Go to http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/ and download the...
What is the difference between a regular string and a verbatim string?
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phuclv
23.1k1111 gold badges8787 silver badges317317 bronze badges
answered Jul 22 '10 at 18:19
alc6379alc637...
cartesian product in pandas
...import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']]
Output:
col1 col2 col3
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
See here...
What is Cache-Control: private?
...e a Last-Modified date in the response:
Last-Modified: Tue, 16 Oct 2012 03:13:38 GMT
Because the browser knows the date the file was modified, it can perform a conditional request. It will ask the server for the file, but instruct the server to only send the file if it has been modified since 20...
How to use Git Revert
...$ git add README.md
$ git commit -m "initial commit"
[master (root-commit) 3f7522e] initial commit
1 file changed, 1 insertion(+)
create mode 100644 README.md
$ echo "bad update" > README.md
$ git commit -am "bad update"
[master a1b9870] bad update
1 file changed, 1 insertion(+), 1 deletion(-...
What does “Git push non-fast-forward updates were rejected” mean?
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137
GitHub has a nice section called "Dealing with “non-fast-forward” errors"
This error ca...
Should logger be private static or not
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edited Oct 1 '10 at 20:37
answered Oct 1 '10 at 20:28
Ba...
What is the difference between Class Path and Build Path
...to build path.
– Bax
Oct 11 '12 at 13:25
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