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What is the volatile keyword useful for?
...ce.
– Adam Zalcman
Jul 18 '13 at 12:32
46
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How to convert vector to array
...?
If you're calling an API function that expects the former, you can do do_something(&v[0], v.size()), where v is a vector of doubles. The elements of a vector are contiguous.
Otherwise, you just have to copy each element:
double arr[100];
std::copy(v.begin(), v.end(), arr);
Ensure not only...
What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
... SamSam
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4
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How to calculate a time difference in C++
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See std::clock() function.
const clock_t begin_time = clock();
// do something
std::cout << float( clock () - begin_time ) / CLOCKS_PER_SEC;
If you want calculate execution time for self ( not for user ), it is better to do this in clock ticks ( not seco...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...
Dominic Cronin
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answered Jun 19 '11 at 15:59
Darin DimitrovDarin ...
SQL Server Insert if not exists
...wered Jan 20 '16 at 6:10
user4023224user4023224
7
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Add Variables to Tuple
...
>>> from dis import dis
>>> dis(f)
2 0 LOAD_CONST 1 (('foo', 'bar'))
2 STORE_FAST 0 (tuple1)
3 4 LOAD_FAST 0 (tuple1)
6 LOAD_CONST 3 (('baz',))
8 BUILD_TUPL...
How do I use arrays in C++?
...rray is treated as a pointer, placed
at the same address as the array. For 32-bit executable this means that the first
int value in the array, is treated as a pointer. I.e., in main.cpp the
numbers variable contains, or appears to contain, (int*)1. This causes the
program to access memory down at ve...
How to search a specific value in all tables (PostgreSQL)?
...
How about dumping the contents of the database, then using grep?
$ pg_dump --data-only --inserts -U postgres your-db-name > a.tmp
$ grep United a.tmp
INSERT INTO countries VALUES ('US', 'United States');
INSERT INTO countries VALUES ('GB', 'United Kingdom');
The same utility, pg_dump, can...
How do I view the SQL generated by the Entity Framework?
...wing:
IQueryable query = from x in appEntities
where x.id == 32
select x;
var sql = ((System.Data.Objects.ObjectQuery)query).ToTraceString();
or in EF6:
var sql = ((System.Data.Entity.Core.Objects.ObjectQuery)query)
.ToTraceString();
That will give you th...