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Logical operators for boolean indexing in Pandas
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What are static factory methods?
... @Sridhar, no, it's the number of connections that exist (tracked so that more than MAX_CONNS aren't created), not the number that are circulating.
– Matthew Flaschen
Jun 10 '15 at 6:15
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Should unit tests be written for getter and setters?
...en that's good enough.
If, on the other hand, your getters and setters do more than just get and set (i.e. they're properly complex methods), then yes, they should be tested. But don't write a unit test case just to test a getter or setters, that's a waste of time.
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Is there a regular expression to detect a valid regular expression?
...ion, such as PCRE, but that can't really be called regular expressions any more.
Indeed, a "recursive regular expression" is not a regular expression. But this an often-accepted extension to regex engines... Ironically, this extended regex doesn't match extended regexes.
"In theory, theory and...
How can I add new keys to a dictionary?
...nt to create a dictionary just to update one key. Do this only if you have more than 1 key (there may be a threshold above which it's better to create a dict)
– Jean-François Fabre♦
Aug 1 '18 at 21:42
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What's the fundamental difference between MFC and ATL?
...ly, or just simply not work because something isn't hooked up right. Much more difficult to debug, and easier to break without noticing.
COM/Automation: Similar to message maps, COM was originally run-time bound using Macros, requiring lots of error handing and causing odd problems. ATL made it t...
vs in Generics
...d? Contravariance = in = allows less derived types to be used in place of more derived. / Covariance = out = allows more derived types to be used in place of less derived. Personally, looking at your diagram, I read it as the opposite of the that.
– Sam Shiles
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Doctrine and composite unique keys
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Adjusting the Xcode iPhone simulator scale and size [duplicate]
... But in the smaller screens(MacBook Pro 15-Inch), I can't scale it more than the screen size sometimes if I want to see the UI elements more clearly. It's a kind of disadvantage in Xcode 9.
– Ashok
Sep 21 '17 at 11:03
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