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Which data type for latitude and longitude?
...ns. 6 digits is 10cm precision, should be plenty for most use cases.
Then cast your your imported data
SELECT
--ST_SetSRID(ST_Point(long, lat),4326) geom -- the wrong way because SRID not set in geometry_columns table
ST_Point(long, lat)::geometry(Geometry, 4326) geom
INTO target_table
FR...
What is the result of % in Python?
...erator, so watch out if you are coming from a language with automatic type casting (like PHP or JS) where an expression like '12' % 2 + 3 is legal: in Python it will result in TypeError: not all arguments converted during string formatting which probably will be pretty confusing for you.
[update for...
Is Meyers' implementation of the Singleton pattern thread safe?
.../ call placement new on s to construct it
}
return (*(reinterpret_cast<Singleton*>( &s)));
}
So here's a simple thread-safe Singleton (for Windows). It uses a simple class wrapper for the Windows CRITICAL_SECTION object so that we can have the compiler automatically initialize ...
Using Mockito's generic “any()” method
... Please have a look into the API, the class argument is just used for casting, the method still accepts any kind of object! site.mockito.org/mockito/docs/current/org/mockito/…. Use isA() for this case site.mockito.org/mockito/docs/current/org/mockito/….
– thilko
...
Retain precision with double in Java
...
Guess it's not really necessary but it avoids casting in the toDouble function so the code reads better.
– Viral Shah
Mar 18 '10 at 4:09
5
...
bool to int conversion
...
There seems to be no problem since the int to bool cast is done implicitly. This works in Microsoft Visual C++, GCC and Intel C++ compiler. No problem in either C or C++.
share
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returning a Void object
...
If you want to return null as void you need to cast it in some cases: (Void) null
– Patrick Favre
Mar 29 '16 at 10:04
...
Which are more performant, CTE or temporary tables?
...Y, B INT , F CHAR(8000) NULL);
INSERT INTO T(B)
SELECT TOP (1000000) 0 + CAST(NEWID() AS BINARY(4))
FROM master..spt_values v1,
master..spt_values v2;
Example 1
WITH CTE1 AS
(
SELECT A,
ABS(B) AS Abs_B,
F
FROM T
)
SELECT *
FROM CTE1
WHERE A = 780
Notice in the plan above ...
Why 0 is true but false is 1 in the shell?
...l always look the same.
Also it needs to be expected that some people cast errno to char or short at some point, or even to float. (int)((char)ENOLCK) is not ENOLCK when char is not at least 8-bit long (7-bit ASCII char machines are supported by UNIX), while (int)((char)0) is 0 independent of t...
how to show progress bar(circle) in an activity having a listview before loading the listview with d
...ists. SO, in the AsyncTask's onPreExecute() I use something like this:
// CAST THE LINEARLAYOUT HOLDING THE MAIN PROGRESS (SPINNER)
LinearLayout linlaHeaderProgress = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
@Override
protected void onPreExecute() {
// SHOW THE SPINNER WHILE ...