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How to amend several commits in Git to change author
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mind explaining this a bit more? not sure what filter branch is
– max pleaner
Aug 23 '14 at 19:34
1
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clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
... error by setting the following environment variables prior compilation:
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments
Then pip install psycopg2should work.
I had the same when trying to pip install lxml.
Edit: if you are installing as superuser (which will likely be the c...
What does .SD stand for in data.table in R
... like "Subset of Data.table". There's no significance to the initial ".", except that it makes it even more unlikely that there will be a clash with a user-defined column name.
If this is your data.table:
DT = data.table(x=rep(c("a","b","c"),each=2), y=c(1,3), v=1:6)
setkey(DT, y)
DT
# x y v
# ...
Matching a space in regex
I need to match a space character in a PHP regular expression. Anyone got any ideas?
9 Answers
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Where is Java Installed on Mac OS X?
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Use /usr/libexec/java_home -v 1.8 command on a terminal shell to figure out where is your Java 1.8 home directory
If you just want to find out the home directory of your most recent version of Java, omit the version. e.g. /usr/libexec/ja...
Django Rest Framework File Upload
...Parser, it's all in the request.
Use a put method instead, you'll find an example in the docs :)
class FileUploadView(views.APIView):
parser_classes = (FileUploadParser,)
def put(self, request, filename, format=None):
file_obj = request.FILES['file']
# do some stuff with up...
Volatile vs. Interlocked vs. lock
...re else that you access this.counter). It prevents any other threads from executing any other code which is guarded by locker.
Using locks also, prevents the multi-CPU reordering problems as above, which is great.
The problem is, locking is slow, and if you re-use the locker in some other place whic...
How can I display just a portion of an image in HTML/CSS?
Let's say I want a way to display just the the center 50x50px of an image that's 250x250px in HTML. How can I do that. Also, is there a way to do this for css:url() references?
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How do I space out the child elements of a StackPanel?
...kPanel>
<StackPanel.Resources>
<Style TargetType="{x:Type TextBox}">
<Setter Property="Margin" Value="0,10,0,0"/>
</Style>
</StackPanel.Resources>
<TextBox Text="Apple"/>
<TextBox Text="Banana"/>
<TextBo...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
...re was no one commonly understood way to evaluate
an array in boolean context: it could mean True if any element is
True, or it could mean True if all elements are True, or True if the array has non-zero length, just to name three possibilities.
Since different users might have different needs and ...