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In Objective-C, how do I test the object type?
I need to test whether the object is of type NSString or UIImageView . How can I accomplish this? Is there some type of "isoftype" method?
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How can I print variable and string on same line in Python?
I am using python to work out how many children would be born in 5 years if a child was born every 7 seconds. The problem is on my last line. How do I get a variable to work when I'm printing text either side of it?
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How can I remove an element from a list, with lodash?
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As lyyons pointed out in the comments, more idiomatic and lodashy way to do this would be to use _.remove, like this
_.remove(obj.subTopics, {
subTopicId: stToDelete
});
Apart from that, you can pass a predicate function whose result will be used to determin...
ARC and bridged cast
With ARC, I can no longer cast CGColorRef to id . I learned that I need to do a bridged cast. According clang docs :
3 ...
best way to preserve numpy arrays on disk
I am looking for a fast way to preserve large numpy arrays. I want to save them to the disk in a binary format, then read them back into memory relatively fastly. cPickle is not fast enough, unfortunately.
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Associativity of “in” in Python?
...n is evaluated as False; ([] in 'a') is never actually evaluated, so no error is raised.
Here are the statement definitions:
In [121]: def func():
.....: return 1 in [] in 'a'
.....:
In [122]: dis.dis(func)
2 0 LOAD_CONST 1 (1)
3 BUILD_LIST ...
How many concurrent requests does a single Flask process receive?
...'s HTTP base, Werkzeug. When I start serving a Flask application with gunicorn and 4 worker processes, does this mean that I can handle 4 concurrent requests?
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What's the difference between globals(), locals(), and vars()?
... either a dictionary of the current namespace (if called with no argument) or the dictionary of the argument.
locals and vars could use some more explanation. If locals() is called inside a function, it updates a dict with the values of the current local variable namespace (plus any closure varia...
How does one write code that best utilizes the CPU cache to improve performance?
This could sound like a subjective question, but what I am looking for are specific instances, which you could have encountered related to this.
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Stylecop vs FXcop
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Stylecop is a style analysis tool that works at the source code level. It exists primarily to provide a single common style that managed projects can use to remain consistent within the larger world of managed software. It makes decisions regarding style primaril...