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How many GCC optimization levels are there?
... optimization flags: -falign-functions -falign-jumps -falign-loops -falign-labels -freorder-blocks -freorder-blocks-and-partition -fprefetch-loop-arrays -ftree-vect-loop-version)
There may also be platform specific optimizations, as @pauldoo notes, OS X has -Oz
...
Understanding recursion [closed]
...
To understand recursion, all you have to do is look on the label of your shampoo bottle:
function repeat()
{
rinse();
lather();
repeat();
}
The problem with this is that there is no termination condition, and the recursion will repeat indefinitely, or until you run out of...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...gen , it wasn't meant to be insulting (since I didn't actually ascribe the label to anyone specific), it was just an indication that pow doesn't really require much skill. Certainly I'd rather have the standard provide something which would require a lot of skill, and result in far more wasted minut...
How exactly does the callstack work?
...tart of a function which subtracts from SP the value of a forward-declared label. Within the function, the compiler can at each point in the code keep track of how many bytes worth of locals are still in scope, and also track the maximum number of bytes worth of locals that are ever in scope. At t...
How do I plot in real-time in a while loop using matplotlib?
...f.fig.add_subplot(111)
# self.ax1 settings
self.ax1.set_xlabel('time')
self.ax1.set_ylabel('raw data')
self.line1 = Line2D([], [], color='blue')
self.line1_tail = Line2D([], [], color='red', linewidth=2)
self.line1_head = Line2D([], [], color='red', ...
load and execute order of scripts
...first entry has already been marked as
ready, then jump back to the step labeled execution.
If the element has a src attribute The element must be added to the
set of scripts that will execute as soon as possible of the Document
of the script element at the time the prepare a script algor...
IntelliJ beginning of file keyboard shortcut
...e end. vote this comment if you are on windows!
– Gab是好人
Jul 21 '15 at 14:41
1
...
How do I show the changes which have been staged?
... what it means "index" in this context? Thanks!
– Gab是好人
Apr 18 '16 at 13:23
2
...
Separation of business logic and data access in django
...er)
title = models.CharField(max_length=125)
class Meta:
app_label = "library"
services.py
from library.models import Book
def get_books(limit=None, **filters):
""" simple service function for retrieving books can be widely extended """
return Book.objects.filter(**filters)...
C++常用排序算法汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
.....end]也成为最大堆
注：由于数组从0开始计算序号，也就是二叉堆的根节点序号为0，
因此序号为i的左右子节点的序号分别为2i+1和2i+2
*/
void HeapAdjustDown(int *arr,int start,int end)
{
int temp = arr[start]; //保存当前节点
int i = 2*start+1;...