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How do I count the number of occurrences of a char in a String?

... The loop method is much faster than this. Especially when wanting to count a char instead of a String (since there is no String.replace(char, char) method). On a 15 character string, I get a difference of 6049 ns vs 26,739 ns (averaged over 100runs). Raw numbers are huge...
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Setting custom UITableViewCells height

...ulate the cell height needed and return that calculated value here to make all cells visible – Vinayak GH Jan 11 '16 at 7:39 add a comment  |  ...
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What is __gxx_personality_v0 for?

... quick grep of the libstd++ code base revealed the following two usages of __gx_personality_v0: In libsupc++/unwind-cxx.h // GNU C++ personality routine, Version 0. extern "C" _Unwind_Reason_Code __gxx_personality_v0 (int, _Unwind_Action, _Unwind_Exceptio...
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How to create a checkbox with a clickable label?

...can explain the comment @John left please do, because it makes no sense at all to me. – Wesley Murch Jul 30 '15 at 13:45 16 ...
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PHP script - detect whether running under linux or Windows?

...TH_SEPARATOR>":" returns true for Windows too (PATH_SEPARATOR is ":" on all other OSs). – Titus Jan 8 '17 at 12:45 ...
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What does numpy.random.seed(0) do?

... I'm not very familiar with NumPy's random state generator stuff, so I'd really appreciate a layman's terms explanation of this. ...
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Downloading a picture via urllib and python

... Note for Python 3 it's actually import urllib.request urllib.request.urlretrieve("http://...jpg", "1.jpg"). It's urlretrieve now as of 3.x. – user1032613 Mar 16 '18 at 0:18 ...
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Multiple columns index when using the declarative ORM extension of sqlalchemy

...e just Column objects, index=True flag works normally: class A(Base): __tablename__ = 'table_A' id = Column(Integer, primary_key=True) a = Column(String(32), index=True) b = Column(String(32), index=True) if you'd like a composite index, again Table is present here as usual you ju...
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Extracting .jar file with command line

...the program from inside the folder. EDIT: Here's another article, specifically focussed on extracting JARs: http://docs.oracle.com/javase/tutorial/deployment/jar/unpack.html share | improve this an...
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Disable all table constraints in Oracle

How can I disable all table constrains in Oracle with a single command? This can be either for a single table, a list of tables, or for all tables. ...