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When to use ref and when it is not necessary in C#
...mean it's good. It would have been better if rather than if (int.TryParse("123", out var theInt) { /* use theInt */ } we had var candidate = int.TrialParse("123"); if (candidate.Parsed) { /* do something with candidate.Value */ } It is more code, but is much more consistent with the C# language desi...
What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?
...a generated id after inserting.
INSERT INTO my_profile (Address) VALUES ('123 Fake St.');
SELECT CAST(scope_identity() AS int)
ExecuteReader gives you a data reader
back which will allow you to read all
of the columns of the results a row
at a time.
An example would be pulling profile informati...
Should struct definitions go in .h or .c file?
...r version:
#include "api.h"
void good(struct s *foo)
{
api_func(foo, 123);
}
This one pokes around in the implementation details:
#include "api.h"
void bad(struct s *foo)
{
foo->internal = 123;
}
which will work with the "definition in header" version, but not with the "definition...
import module from string variable
...ike importlib.import_module("feature.email")
– Seanny123
Dec 6 '13 at 7:13
11
Finally, also remem...
How do you build a Singleton in Dart?
...sible way:
void main() {
var s1 = Singleton.instance;
s1.somedata = 123;
var s2 = Singleton.instance;
print(s2.somedata); // 123
print(identical(s1, s2)); // true
print(s1 == s2); // true
//var s3 = new Singleton(); //produces a warning re missing default constructor and breaks on ...
Hide options in a select list using jQuery
...Nov 17 '10 at 13:17
enthusiastic123enthusiastic123
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How to kill all processes with a given partial name? [closed]
...one go, you don't need a loop for that. If the ps returns three processes 123, 234, and 345, you can kill 123 234 345 just like you can rm or cat multiple file arguments.
– tripleee
Jul 9 '12 at 7:49
...
How to convert std::string to lower case?
...aracters allowed in the french language. For instance a string 'Test String123. É Ï\n' will be converted to : 'test string123. É Ï\n' although characters É Ï and their lower case couterparts 'é' and 'ï', are allowed in french. It seems that no solution for that was provided by other message...
Is it possible to define more than one function per file in MATLAB, and access them from outside tha
...t;> makefuns
ans =
Done importing functions to workspace
>> fun1(123)
ans =
123
>> fun2()
ans =
1
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How can I capitalize the first letter of each word in a string?
...uld you make an addition to your answer that demonstrates this? E.g. lower 123 upper should return lower 123 Upper, where the upper is capitalized as it follows a number. I know it goes beyond the scope of the OP's question but a nice add-on to your already extensive answer. Thanks in advance.
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