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When and why I should use session_regenerate_id()?
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Testing service in Angular returns module is not defined
...level debug start config/testacular.conf.js
The angular.mock.inject docs include a pretty complete example.
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Find when a file was deleted in Git
...l-history -- your_file
will show you all commits in your repo's history, including merge commits, that touched your_file. The last (top) one is the one that deleted the file.
Some explanation:
The --full-history flag here is important. Without it, Git performs "history simplification" when you a...
Tool to track #include dependencies [closed]
...a header file and output should be a list (preferably a tree) of all files including it directly or indirectly.
10 Answers
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Does Django scale? [closed]
... very good presentation on how to scale Django, and makes some good points including (current) shortcomings in Django scalability.
HP had a site built with Django 1.5: ePrint center. However, as for novemer/2015 the entire website was migrated and this link is just a redirect. This website was a wor...
What is the advantage of using forwarding references in range-based for loops?
... to operate on that reference in a non-const way. For example consider:
#include <vector>
int main()
{
std::vector<bool> v(10);
for (auto& e : v)
e = true;
}
This doesn't compile because rvalue vector<bool>::reference returned from the iterator won't bind t...
What's the difference between identifying and non-identifying relationships?
...iple phone numbers, we make a second table PhoneNumbers, whose primary key includes the person_id referencing the Person table.
We may think of the phone number(s) as belonging to a person, even though they are modeled as attributes of a separate table. This is a strong clue that this is an iden...
How can I use an array of function pointers?
...'s how you can use it:
New_Fun.h
#ifndef NEW_FUN_H_
#define NEW_FUN_H_
#include <stdio.h>
typedef int speed;
speed fun(int x);
enum fp {
f1, f2, f3, f4, f5
};
void F1();
void F2();
void F3();
void F4();
void F5();
#endif
New_Fun.c
#include "New_Fun.h"
speed fun(int x)
{
int V...
What's valid and what's not in a URI query?
...c URIs is RFC 3986, which has this to say:
2.2. Reserved Characters
URIs include components and subcomponents that are delimited by characters in the "reserved" set. These characters are called "reserved" because they may (or may not) be defined as delimiters by the generic syntax, by each scheme-...
How to estimate how much memory a Pandas' DataFrame will need?
... 20906600
Calendar_Year 20906600
Model_Year 20906600
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To include indexes, pass index=True.
So to get overall memory consumption:
>>> df.memory_usage(index=True).sum()
731731000
Also, passing deep=True will enable a more accurate memory usage report, that accounts for the ...