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What is the difference between procedural programming and functional programming? [closed]
...rely functional program always yields the same value for an input, and the order of evaluation is not well-defined; which means that uncertain values like user input or random values are hard to model in purely functional languages.
1 As everything else in this answer, that’s a generalisation. ...
How to properly assert that an exception gets raised in pytest?
...
pytest.raises(Exception) is what you need.
Code
import pytest
def test_passes():
with pytest.raises(Exception) as e_info:
x = 1 / 0
def test_passes_without_info():
with pytest.raises(Exception):
x = 1 / 0
def test_fails():
with pytest.raises(Exception) as e_info:
...
How to for each the hashmap? [duplicate]
...anything with the combo box once its created. Or are the values not in the order you want? Or did you need the keys instead of the values in the combo box? I think most would agree that any of the 3 answers so far should work fine, so likely there's a problem with apply the answer or another proble...
Are 2^n and n*2^n in the same time complexity?
...
You will have to go to the formal definition of the big O (O) in order to answer this question.
The definition is that f(x) belongs to O(g(x)) if and only if the limit limsupx → ∞ (f(x)/g(x)) exists i.e. is not infinity. In short this means that there exists a constant M, such that v...
dismissModalViewControllerAnimated deprecated
...
The warning is still there. In order to get rid of it I put it into a selector like this:
if ([self respondsToSelector:@selector(dismissModalViewControllerAnimated:)]) {
[self performSelector:@selector(dismissModalViewControllerAnimated:) withObject:[...
Generate random numbers uniformly over an entire range
...);
std::shuffle(vec.begin(), vec.end(), generator);
The algorithm will reorder the elements randomly, with a linear complexity.
Boost.Random
Another alternative, in case you don't have access to a C++11+ compiler, is to use Boost.Random. Its interface is very similar to the C++11 one.
...
filename and line number of python script
...
Whether you use currentframe().f_back depends on whether you are using a
function or not.
Calling inspect directly:
from inspect import currentframe, getframeinfo
cf = currentframe()
filename = getframeinfo(cf).filename
print "This is line 5, python say...
A field initializer cannot reference the nonstatic field, method, or property
...ion", the following: The variable initializers are executed in the textual order in which they appear in the class declaration. This is even repeated in "10.11.2 Instance variable initializers" where they say: The variable initializers are executed in the textual order in which they appear in the cl...
How can I specify a [DllImport] path at runtime?
...h for the DLL.
If SafeDllSearchMode is enabled (the default), the search order is as follows:
The directory from which the application loaded.
The system directory. Use the GetSystemDirectory function to get the path of this directory.
The 16-bit system directory. There is no function that obtain...
C++ preprocessor __VA_ARGS__ number of arguments
...re however you have a macro implementation that does the count:
#define PP_NARG(...) \
PP_NARG_(__VA_ARGS__,PP_RSEQ_N())
#define PP_NARG_(...) \
PP_ARG_N(__VA_ARGS__)
#define PP_ARG_N( \
_1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \
_11,_12,_13,_14,_15,_16,_17,_18,_...