大约有 16,000 项符合查询结果（耗时：0.0399秒） [XML]
NULL vs nullptr (Why was it replaced?) [duplicate]
I know that in C++ 0x or NULL was replaced by nullptr in pointer-based applications. I'm just curious of the exact reason why they made this replacement?
...
How do you perform a left outer join using linq extension methods
... @AbdulkarimKanaan yes - SelectMany flattens two layers of 1-many into 1 layer with an entry per pair
– Marc Gravell♦
Jan 5 '18 at 14:29
1
...
Incrementing in C++ - When to use x++ or ++x?
...ack to x, it is only guaranteed that it happens before the next sequence point. 'after processing the current statement' is not strictly accurate as some expressions have sequence points and some statements are compound statements.
– CB Bailey
Nov 28 '09 at 17:...
IN clause and placeholders
...the form "?, ?, ..., ?" can be a dynamically created string and safely put into the original SQL query (because it is a restricted form that does not contain external data) and then the placeholders can be used as normal.
Consider a function String makePlaceholders(int len) which returns len questi...
Does it make any sense to use inline keyword with templates?
...compilers know better when to inline a function and are ignoring inline hint.
3 Answers
...
What Makes a Method Thread-safe? What are the rules?
...eadSafeMethod concurrently without issue.
public class Thing
{
public int ThreadSafeMethod(string parameter1)
{
int number; // each thread will have its own variable for number.
number = parameter1.Length;
return number;
}
}
This is also true if the method call...
how to schedule a job for sql query to run daily?
...abaseName = 'Databasename' SET @pathName = 'C:\DBBackup\DBData\DBBackUp' + Convert(varchar(8), GETDATE(), 112) + '_' + Replace((Convert(varchar(8), GETDATE(), 108)),':','-')+ '.bak' BACKUP DATABASE @databaseName TO DISK = @pathName WITH NOFORMAT,
INIT,
NAME = N'',
SKIP,
NOREWIND,
NOUNLOAD,
STA...
What is Func, how and when is it used
...
No, I'm correct. static int OneArgFunc(this string i) { return 42; } Func<int> f = "foo".OneArgFunc;. =)
– Ark-kun
Jan 9 '14 at 9:21
...
When tracing out variables in the console, How to create a new line?
...separate console.log() for each var, and separate with a comma rather than converting them all to strings? That would give you separate lines, AND give you the true value of each variable rather than the string representation of each (assuming they may not all be strings).
console.log('roleName',ro...
How can I put a ListView into a ScrollView without it collapsing?
...problem, and the only answer I can find seems to be " don't put a ListView into a ScrollView ". I have yet to see any real explanation for why though. The only reason I can seem to find is that Google doesn't think you should want to do that. Well I do, so I did.
...