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How do I filter query objects by date range in Django?
...queryset(self, request, queryset, view):
predicate = request.query_params # or request.data for POST
if predicate.get('from_date', None) is not None and predicate.get('to_date', None) is not None:
queryset = queryset.filter(your_date__range=(predicate['from_date'], predi...
How do I run Python code from Sublime Text 2?
... the meaning of option "-u"? I cannot find the list option of command line params to pass together with python.exe.
– Jim Raynor
Apr 18 '14 at 20:33
...
Extract substring in Bash
...
If x is constant, the following parameter expansion performs substring extraction:
b=${a:12:5}
where 12 is the offset (zero-based) and 5 is the length
If the underscores around the digits are the only ones in the input, you can strip off the prefix and ...
What's the nearest substitute for a function pointer in Java?
...ymous inner class
Say you want to have a function passed in with a String param that returns an int.
First you have to define an interface with the function as its only member, if you can't reuse an existing one.
interface StringFunction {
int func(String param);
}
A method that takes the po...
Simple conversion between java.util.Date and XMLGregorianCalendar
... {
/**
* Calendar to custom format print to XML.
*
* @param val
* @return
*/
public static String printCalendar(java.util.Calendar val) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss");
return simpleDateFormat.form...
Authorize Attribute with Multiple Roles
...zeRolesAttribute : AuthorizeAttribute
{
public AuthorizeRolesAttribute(params string[] roles) : base()
{
Roles = string.Join(",", roles);
}
}
Assuming your roles will be the same for multiple controllers, create a helper class:
public static class Role
{
public const strin...
Can an angular directive pass arguments to functions in expressions specified in the directive's att
...on because in directive definition, sometimes you wouldn't know what's the parameter to pass in.
– OMGPOP
Jul 2 '15 at 6:58
...
Website screenshots
...on that is using Google Page Insight api.
Just need to call it's api with params screenshot=true.
https://www.googleapis.com/pagespeedonline/v1/runPagespeed?
url=https://stackoverflow.com/&key={your_api_key}&screenshot=true
For mobile site view pass &strategy=mobile in params,
https...
Error: Can't set headers after they are sent to the client
...body
var doesNotModifyBody = function(request, response, next) {
request.params = {
a: "b"
};
// calls next because it hasn't modified the header
next();
};
// middleware that modify the response body
var doesModifyBody = function(request, response, next) {
response.setHeader("Content...
Determine a string's encoding in C#
...ncoding and the contents of the file.
/// </summary>
/// <param name="fileName"></param>
/// <param name="contents"></param>
/// <returns></returns>
public static Encoding DetectEncoding(String fileName, out String contents)
{
...