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Django dynamic model fields
...NB) more compact than Hstore.
Several packages implement JSON/JSONB fields including django-pgfields, but as of Django 1.9, JSONField is a built-in using JSONB for storage.
JSONField is similar to HStoreField, and may perform better with large dictionaries. It also supports types other than strings...
How to debug Ruby scripts [closed]
...ngle line that doesn't do what you expect it to do. For example
[1, 2, 3].include?([1,2])
gives a value of false, even though you'd think it'd return true. In that case, you may want to look at the documentation. Web sites for documentation include ruby-doc.org, or APIdock. In the latter case, yo...
Can virtual functions have default parameters?
...ruct are exactly the same in almost every way except default visibility.
#include <string>
#include <sstream>
#include <iostream>
#include <iomanip>
using std::stringstream;
using std::string;
using std::cout;
using std::endl;
struct Base { virtual string Speak(int n = 42)...
Loop through an array of strings in Bash?
...
None of those answers include a counter...
#!/bin/bash
## declare an array variable
declare -a array=("one" "two" "three")
# get length of an array
arraylength=${#array[@]}
# use for loop to read all values and indexes
for (( i=1; i<${arrayl...
How do I declare a 2d array in C++ using new?
... = new double[M][N]();
Sample program (compile with "g++ -std=c++11"):
#include <iostream>
#include <utility>
#include <type_traits>
#include <typeinfo>
#include <cxxabi.h>
using namespace std;
int main()
{
const auto M = 2;
const auto N = 2;
// allocat...
How to make a SIMPLE C++ Makefile
...wer than support.o, and if so run a command like
g++ -g -c -pthread -I/sw/include/root support.cc
Check if either support.hh or tool.cc are newer than tool.o, and if so run a command like
g++ -g -c -pthread -I/sw/include/root tool.cc
Check if tool.o is newer than tool, and if so run a command l...
How to manage client-side JavaScript dependencies? [closed]
....json file. Add "coffee-script" to "dependencies".
Suppose you wanted to include your own module 'bloomfilters' and it wasn't in the npm registry. You could add it to your project in the following way:
1. npm --save install https://github.com/dsummersl/bloomfilters/tarball/master
2. Manually edit...
What is the best way to conditionally apply attributes in AngularJS?
...rt uses Angular 1.2 and ng-attr-. Also the latest docs (Angular 1.4) still include ng-attr-
– Ashley Davis
Mar 7 '15 at 1:05
...
How do I show multiple recaptchas on a single page?
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Why is std::min failing when windows.h is included?
What is windows doing if I include Windows.h? I can't use std::min in visual studio 2005. The error message is:
10 Answer...