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What is “overhead”?
...e the same size as a pointer, this means a 50% memory overhead, whereas an array can potentially have 0% overhead.
Method call overhead: A well-designed program is broken down into lots of short methods. But each method call requires setting up a stack frame, copying parameters and a return address....
What is a segmentation fault?
...the memory they point to has been realloced or deleted.
Used in an indexed array where the index is outside of the array bounds. This is generally only when you're doing pointer math on traditional arrays or c-strings, not STL / Boost based collections (in C++.)
...
How do you reverse a string in place in C or C++?
... the middle. Swap as you go.
Reverse ASCII string, i.e. a 0-terminated array where every character fits in 1 char. (Or other non-multibyte character sets).
void strrev(char *head)
{
if (!head) return;
char *tail = head;
while(*tail) ++tail; // find the 0 terminator, like head+strlen
...
Polymorphism in C++
...ing inlining and dead code elimination, loop unrolling, static stack-based arrays vs heap)
__FILE__, __LINE__, string literal concatenation and other unique capabilities of macros (which remain evil ;-))
templates and macros test semantic usage is supported, but don't artificially restrict how that ...
How do I get the result of a command in a variable in windows?
...loads the content of tmpFile.
Here is a solution for multiple lines with "array's":
@echo off
rem ---------
rem Obtain line numbers from the file
rem ---------
rem This is the file that is being read: You can replace this with %1 for dynamic behaviour or replace it with some command like the fir...
How to make a flat list out of list of lists?
...ertools.chain.from_iterable(a))
def numpy_flat(a):
return list(numpy.array(a).flat)
def numpy_concatenate(a):
return list(numpy.concatenate(a))
perfplot.show(
setup=lambda n: [list(range(10))] * n,
# setup=lambda n: [list(range(n))] * 10,
kernels=[
forfor,
s...
Grouping functions (tapply, by, aggregate) and the *apply family
...
# apply max to columns
apply(M, 2, max)
[1] 4 8 12 16
# 3 dimensional array
M <- array( seq(32), dim = c(4,4,2))
# Apply sum across each M[*, , ] - i.e Sum across 2nd and 3rd dimension
apply(M, 1, sum)
# Result is one-dimensional
[1] 120 128 136 144
# Apply sum across each M[*, *, ] - i.e ...
java: (String[])List.toArray() gives ClassCastException
...
This is because when you use
toArray()
it returns an Object[], which can't be cast to a String[] (even tho the contents are Strings) This is because the toArray method only gets a
List
and not
List<String>
as generics are a source code on...
How do I convert a String object into a Hash object?
...tax.
However, if all that's in the hash is strings, symbols, numbers, and arrays, it should work, because those have string representations that are valid Ruby syntax.
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How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
...es. After debugging the sorce code i found out that there is a $$listeners array that has all the events and created my $off function. Thanks
– Hitesh.Aneja
Feb 15 '13 at 16:27
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