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Finding the type of an object in C++
I have a class A and another class that inherits from it, B. I am overriding a function that accepts an object of type A as a parameter, so I have to accept an A. However, I later call functions that only B has, so I want to return false and not proceed if the object passed is not of type B.
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Best way to extract a subvector from a vector?
... Ok, I didn't realize it was that simple to obtain an iterator from an arbitrary vector element.
– An̲̳̳drew
Jan 7 '09 at 19:58
6
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log4j logging hierarchy order
...
Use the force, read the source (excerpt from the Priority and Level class compiled, TRACE level was introduced in version 1.2.12):
public final static int OFF_INT = Integer.MAX_VALUE;
public final static int FATAL_INT = 50000;
public final static int ERROR_INT = 4...
Are multiple `.gitignore`s frowned on?
... do a git check-ignore -v -- yourfile in order to see which gitignore run (from which .gitignore file) is applied to 'yourfile', and better understand why said file is ignored.
See "which gitignore rule is ignoring my file?"
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Multiprocessing: How to use Pool.map on a function defined in a class?
... to circumvent this. It appears to work, even for recursive use of parmap.
from multiprocessing import Process, Pipe
from itertools import izip
def spawn(f):
def fun(pipe, x):
pipe.send(f(x))
pipe.close()
return fun
def parmap(f, X):
pipe = [Pipe() for x in X]
proc ...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...on.
(Aside: I've just reviewed the code generator for delegate creation from quoted expression trees, and unfortunately a comment that I put into the code back in 2006 is still there. FYI, the hoisted outer parameter is snapshotted into a constant when the quoted expression tree is reified as a d...
Libraries not found when using CocoaPods with iOS logic tests
... some iOS logic tests against classes in my project that use functionality from some of the libraries in my podspec. I am using the standard unit test bundle provided in Xcode (although not Application Tests, just Unit Tests).
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Programmer-friendly search engine? [closed]
...rching for APi documentation the engine should also extract valid examples from eg blog posts and show them to us. Et cetera.
For the full paper, please refer to: "Assieme, Finding and Leveraging Implicit References
in a Web Search Interface for Programmers"
PS: If you are interest in the latest...
Parsing boolean values with argparse
...olution using the previous suggestions, but with the "correct" parse error from argparse:
def str2bool(v):
if isinstance(v, bool):
return v
if v.lower() in ('yes', 'true', 't', 'y', '1'):
return True
elif v.lower() in ('no', 'false', 'f', 'n', '0'):
return False
...
How to replace a set of tokens in a Java String?
... constructors and set methods.
Variable values are typically resolved from a map, but could also be
resolved from system properties, or by supplying a custom variable
resolver.
For example, if you want to substitute system environment variable into a template string,
here is the code:
pu...