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What algorithms compute directions from point A to point B on a map?
...
Just addressing the triangle inequality violations, hopefully the extra factor they're optimising for is common sense. You don't necessarily want the shortest or fastest route, as it can lead to chaos and destruction. If you want your directions to prefer the major routes that are truck-fri...
How to pass table value parameters to stored procedure from .net code
... ExecuteProcedure(bool useDataTable,
string connectionString,
IEnumerable<long> ids)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
using (SqlCom...
How to get body of a POST in php?
...can make use of the http_get_request_body() function to get body data as a string.
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How to convert a Bitmap to Drawable in android?
...if you're going to down vote. This is a perfectly valid answer, and brings extra information to solve issues that can occur with the other answers offered. Drawables made directly from a bitmap often have scaling errors without the getResources() reference.
– Zulaxia
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Detect Windows version in .net
...this when I had to determine various Microsoft Operating System versions:
string getOSInfo()
{
//Get Operating system information.
OperatingSystem os = Environment.OSVersion;
//Get version information about the os.
Version vs = os.Version;
//Variable to hold our return value
stri...
What's the difference between BaseAdapter and ArrayAdapter?
...ctor in the subclass constructor.
UserListAdapter extends ArrayAdapter<String>{
List<String> UserList;
Context context;
public UserListAdapter(Context context, int resource,List<String> listUsers) {
super(context, resource, listUsers); /* Super class construct...
Join strings with a delimiter only if strings are not null or empty
... I'm trying to find a simple way to concatenate only non-null or non-empty strings.
7 Answers
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select and update database record with a single queryset
...value that evaluates to True (i.e., a value
other than None or the empty string), Django executes an UPDATE. If
the object’s primary key attribute is not set or if the UPDATE didn’t
update anything, Django executes an INSERT.
Ref.: https://docs.djangoproject.com/en/1.9/ref/models/instanc...
Last non-empty cell in a column
...(the 65536th row in Excel 2003, for instance) is not robust and results in extra overhead
This is what I use
when the data type is mixed: =max(MATCH(1E+306,[RANGE],1),MATCH("*",[RANGE],-1))
when it's known that the data contains only numbers: =MATCH(1E+306,[RANGE],1)
when it's known that the dat...
Why doesn't indexOf work on an array IE8?
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I just found out that the $.inArray is only works with "Array", not with String.
That's why this function will not working in IE8!
The jQuery API make confusion
The $.inArray() method is similar to JavaScript's native .indexOf()
method in that it returns -1 when it doesn't find a match. If ...