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Extension methods must be defined in a non-generic static class
...he work-around is to write a new Extension class (not nested) even in same file and re-build.
Figured that this thread is getting enough views that it's worth passing on (the limited) solution I found. Most people probably tried adding 'static' before google-ing for a solution! and I didn't see t...
Setting different color for each series in scatter plot on matplotlib
...draw.
the command pyplot.scatter return a PatchCollection Object, in the file "matplotlib/collections.py" a private variable _facecolors in Collection class and a method set_facecolors.
so whenever you have a scatter points to draw you can do this:
# rgbaArr is a N*4 array of float numbers you ...
What is the difference between setUp() and setUpClass() in Python unittest?
...ave to do once, such as opening a database connection, opening a temporary file on the filesystem, loading a shared library for testing, etc. Doing such things before each test would slow down the test suite too much, so we just do it once before all the tests. This is a slight degradation in the in...
Aggregate function in an SQL update query?
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this didn't work for me, because t2.filed3 was the same name as table1.field2, so the join performed behind the scenes didn't work properly. (I assuem there's a join behind the scenes)
– Joe
Aug 2 '19 at 15:06
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Programmatically create a UIView with color gradient
...nd add your desired gradients as class methods. Specify them in the header file like this :
#import <QuartzCore/QuartzCore.h>
@interface CAGradientLayer (SJSGradients)
+ (CAGradientLayer *)redGradientLayer;
+ (CAGradientLayer *)blueGradientLayer;
+ (CAGradientLayer *)turquoiseGradientLayer;...
How to set a default value for a datetime column to record creation time in a migration?
...ion only works when you run rake db:migrate, not when you load your schema file with something like rake db:schema:load.
– Alter Lagos
Jul 27 '17 at 23:32
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Why would an Enum implement an Interface?
...ing the natural ordering is the order the enum constants are in the source file.
– Jorn
Aug 21 '12 at 21:43
Enum vars ...
What size should TabBar images be?
...ion. Which is about 25px for the 1x. Something to keep in mind when naming files
– Rene Pot
Oct 7 '17 at 12:09
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How do I access the command history from IDLE?
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You can always edit the file config-keys.cfg found under ~/.idlerc by default; look for the entry "history-previous" and set it to as below...
history-previous = <Key-Up>
Done.
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Why is Java's AbstractList's removeRange() method protected?
...panning till the very end of the list? hg.openjdk.java.net/jdk8u/jdk8u/jdk/file/e2117e30fb39/src/share/… the numMoved is 0, so the entire arraycopy code could've been put into a single if (as done in remove); the difference is that a) arraycopy is a native call, incurring an overhead, b) arraycopy...