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Alternatives to gprof [closed]
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Valgrind has an instruction-count profiler with a very nice visualizer called KCacheGrind. As Mike Dunlavey recommends, Valgrind counts the fraction of instructions for which a procedure is live on the stack, although I'm sorry to say it appears to become confused in ...
What's the cleanest way of applying map() to a dictionary in Swift?
...4 includes a mapValues(_:) method which constructs a copy of a dictionary with the same keys, but different values. It also includes a filter(_:) overload which returns a Dictionary, and init(uniqueKeysWithValues:) and init(_:uniquingKeysWith:) initializers to create a Dictionary from an arbitrary s...
Mocking a class: Mock() or patch()?
I am using mock with Python and was wondering which of those two approaches is better (read: more pythonic).
2 Answers
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Printf width specifier to maintain precision of floating-point value
...automatically format the output to the necessary number of significant digits such that when scanning the string back in, the original floating point value is acquired?
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Detect URLs in text with JavaScript
...most anything is a valid URL. There
are some punctuation rules for
splitting it up. Absent any
punctuation, you still have a valid
URL.
Check the RFC carefully and see if you
can construct an "invalid" URL. The
rules are very flexible.
For example ::::: is a valid URL.
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What's the dSYM and how to use it? (iOS SDK)
...SYM files. I guess this is a debugging related file, but I don't know what it is, and how to use it.
2 Answers
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Conveniently Declaring Compile-Time Strings in C++
...rings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
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Django rest framework nested self-referential objects
...tCategory', 'name', 'description', 'subcategories')
If you want to deal with arbitrarily nested fields you should take a look at the customising the default fields part of the docs. You can't currently directly declare a serializer as a field on itself, but you can use these methods to override w...
How to use phpexcel to read data and insert into database?
...s very dependent on your database, and how you want the data structured in it
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Is it possible to await an event instead of another async method?
... kicks off a long-running process. So, as recommended, I'm using async/await to make sure the UI thread doesn't get blocked:
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