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How can you tell when a layout has been drawn?
...n pixels of the parent layout object. But during the onCreate and onResume functions, the Layout has not been drawn yet, and so layout.getMeasuredHeight() returns 0.
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Difference between CouchDB and Couchbase
...of CouchIO/Couch One prior to the merger. Citing a fun, historical source: https://youtube.com/watch?v=aZ_JOnU8tkI
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How to send a header using a HTTP request through a curl call?
...move multi-
ple headers.
Example:
curl --header "X-MyHeader: 123" www.google.com
You can see the request that curl sent by adding the -v option.
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Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
I have a class that will download a file from a https server. When I run it, it returns a lot of errors. It seems that I have a problem with my certificate. Is it possible to ignore the client-server authentication? If so, how?
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How to select the row with the maximum value in each group
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The most intuitive method is to use group_by and top_n function in dplyr
group %>% group_by(Subject) %>% top_n(1, pt)
The result you get is
Source: local data frame [3 x 3]
Groups: Subject [3]
Subject pt Event
(dbl) (dbl) (dbl)
1 ...
Unix command to find lines common in two files
...)-release
Copyright (C) 2007 Free Software Foundation, Inc.
$ cat > abc
123
567
132
$ cat > def
132
777
321
So the files abc and def have one line in common, the one with "132".
Using comm on unsorted files:
$ comm abc def
123
132
567
132
777
321
$ comm -12 abc def # No output! ...
How do I set default values for functions parameters in Matlab?
... use "varargs" and check against the number of arguments. Something like:
function f(arg1, arg2, arg3)
if nargin < 3
arg3 = 'some default'
end
end
There are a few fancier things you can do with isempty, etc., and you might want to look at Matlab central for some packages that bundl...
How to break out of nested loops?
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No, don't spoil the fun with a break. This is the last remaining valid use of goto ;)
If not this then you could use flags to break out of deep nested loops.
Another approach to breaking out of a nested loop is to factor out both loops into ...
Fastest way to determine if an integer's square root is an integer
... if( x == 0 )
return true;
// Check mod 255 = 3 * 5 * 17, for fun
int64 y = x;
y = (y & 4294967295LL) + (y >> 32);
y = (y & 65535) + (y >> 16);
y = (y & 255) + ((y >> 8) & 255) + (y >> 16);
if( bad255[y] )
return false;...
Is it worth using Python's re.compile?
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dF.dF.
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