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ARC and bridged cast
...roach for providing CGColorRef references into NSArrays from these UIColor converter methods. I, and many others, use this exact code within ARC-enabled applications. The immediate casting to (id) from a method that returns a Core Foundation object automatically bridges that object to ARC properly.
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Ember.js or Backbone.js for Restful backend [closed]
...e patterns, and complex state management. I went through the experience of converting a legacy app over to Backbone and had to do exactly what you listed. We needed to integrate Marionette as well as write plenty of glue code for things like pre/post route filtering, memory leak mitigation, and bett...
Matplotlib discrete colorbar
...s making 0 showup as grey.
For images i often use the cmap.set_bad() and convert my data to a numpy masked array. That would be much easier to make 0 grey, but i couldnt get this to work with the scatter or the custom cmap.
As an alternative you can make your own cmap from scratch, or read-out a...
Highlight a word with jQuery
...is possible to color a specific word inside a body of text. The idea is to convert the text into an array using the split function, then iterate over each word until the word of interest is identified. Once found, the word of interest can be colored by replacing that element with a span around the w...
Concatenating two one-dimensional NumPy arrays
...rpret your b as the axis parameter, which is why it complained it couldn't convert it into a scalar.
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LaTeX Optional Arguments
...eing YYY.
Thus the usage of \example is either:
\example{BBB}
which prints:
Mandatory arg: BBB; Optional arg: YYY.
or:
\example[XXX]{AAA}
which prints:
Mandatory arg: AAA; Optional arg: XXX.
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UnboundLocalError on local variable when reassigned after first use
...ate new locals). The parse phase is finding each assignment to a local and converting from name to position in that array, and using that position whenever the name is referenced. On entry to the function, non-argument locals are initialized to a placeholder, and UnboundLocalErrors happen when a var...
How do I apply a perspective transform to a UIView?
...can download it from https://github.com/nicklockwood/iCarousel and drop it into your Xcode project fairly easily by adding a bridging header (it's written in Objective-C).
If you haven't added Objective-C code to a Swift project before, follow these steps:
Download iCarousel and unzip it
Go into ...
MySQL indexes - what are the best practices?
...nd all the rows where column starts with "foo", and then need to scan that intermediate rowset to find the subset that contains "bar". SELECT ... WHERE column LIKE '%bar%' can't use the index. I hope you can see why.
Finally, you need to start thinking about indexes on more than one column. The ...
Why aren't programs written in Assembly more often? [closed]
... getting at. I won't feel any embarrassment, not even a slight ick, when I convert a three-line loop to thousands of instructions just to make it faster. I have no shame to go to great lengths of optimization or to do the dirtiest tricks. And if you don't want me to, maybe for a day or two, I'll beh...