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How to check Django version
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For Python:
import sys
sys.version
For Django (as mentioned by others here):
import django
django.get_version()
The potential problem with simply checking the version, is that versions get upgraded and so the code can go out of date. You w...
Why is a round-trip conversion via a string not safe for a double?
...ng .NET 4.5.1 (x64), running the following console app which uses my DoubleConverter class.DoubleConverter.ToExactString shows the exact value represented by a double:
using System;
class Test
{
static void Main()
{
double d1 = 0.84551240822557006;
string s = d1.ToString("r...
How do I get an apk file from an Android device?
...e from an android device? Or how do I transfer the apk file from device to system?
24 Answers
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Search All Fields In All Tables For A Specific Value (Oracle)
... FROM all_tab_columns
WHERE owner <> 'SYS' and data_type LIKE '%CHAR%') LOOP
EXECUTE IMMEDIATE
'SELECT COUNT(*) FROM ' || t.owner || '.' || t.table_name ||
' WHERE '||t.column_name||' = :1'
INTO match_count
USING '...
How to round a number to n decimal places in Java
What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations.
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How to get current time and date in C++?
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std C libraries provide time().
This is seconds from the epoch and can be converted to date and H:M:S using standard C functions. Boost also has a time/date library that you can check.
time_t timev;
time(&timev);
sha...
From Arraylist to Array
I want to know if it is safe/advisable to convert from ArrayList to Array?
I have a text file with each line a string:
9 An...
Function passed as template argument
...code. So the instantiated code for do_op with fadd looks something like:
convert a and b from int to float.
call the function ptr op with float a and float b.
convert the result back to int and return it.
By comparison, our by-value case requires an exact match on the function arguments.
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What is the type of lambda when deduced with “auto” in C++11?
...().
A lambda which captures no variables (nothing inside the []'s) can be converted into a function pointer (MSVC2010 doesn't support this, if that's your compiler, but this conversion is part of the standard).
But the actual type of the lambda isn't a function pointer. It's some unspecified funct...
How to convert float to varchar in SQL Server
I have a float column with numbers of different length and I'm trying to convert them to varchar.
15 Answers
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