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HashSet vs. List performance
...ashSet for a small number of items. But the performance difference usually doesn't matter for collections that small. It's generally the large collections you have to worry about, and that's where you think in terms of Big-O. However, if you've measured a real bottleneck on HashSet performance, then...
How do I print the elements of a C++ vector in GDB?
...ks fine as long as the vector elements are directly interpretable. But it doesn't help if the vector contains pointers to the items of interest.
– wallyk
Apr 30 '15 at 17:34
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Any difference between First Class Function and High Order Function
...lk about "first-class" other things, like first-class classes, etc), or it doesn't. So you never talk about a particular function being first-class or not. OTOH, when you say a function is higher-order or not, that just says whether or not it operates on functions, so "higher-order-ness" is a proper...
Maximum Length of Command Line String
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@eryksun The UNICODE_STRING structure does not necessarily store null terminator.
– 賈可 Jacky
Jun 3 '19 at 2:31
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How to import a Python class that is in a directory above?
... relative import beyond top-level package :(
– RicardoE
Aug 12 '18 at 6:17
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using from .. imp...
Display open transactions in MySQL
... fix this
To check for auto-reconnection:
If an automatic reconnection does occur (for example, as a result of calling mysql_ping()), there is no explicit indication of it. To check for reconnection, call mysql_thread_id() to get the original connection identifier before calling mysql_ping(), th...
How to create default value for function argument in Clojure
...t;integer. That would make it easier to rename the function in the future. Does anyone know any reason not to use recur in these situations?
– Rory O'Kane
Aug 9 '14 at 23:24
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How to capture stdout output from a Python function call?
I'm using a Python library that does something to an object
3 Answers
3
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Build vs new in Rails 3
...th new and build add the new client to some_firm's client collection, what does build do that new doesn't do? I'm sorry for being dense, here!
– ClosureCowboy
Feb 10 '11 at 14:37
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scala vs java, performance and memory? [closed]
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@RexKerr - doesn't your Java example lookup the mapping key twice for each possible String where your Scala example only does it once after the Strings have been selected? I.e. they are optimised in different ways for different data se...