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What are copy elision and return value optimization?
...uctor"<<endl; }
};
ABC fun123()
{ ABC obj; return obj; }
ABC xyz123()
{ return ABC(); }
int main()
{
ABC abc;
ABC obj1(fun123());//NRVO
ABC obj2(xyz123());//NRVO
ABC xyz = "Stack Overflow";//RVO
return 0;
}
**Output without -fno-elide-constructo...
Redirect to external URI from ASP.NET MVC controller
...ie. when I want to redirect from example.com/action to example.org/?search=xyz, using return Redirect("https://www.example.org/?search=xyz"); the result is redirecting to example.com/?search=xyz.
– Kraken101
Nov 1 '17 at 11:40
...
Difference between Role and GrantedAuthority in Spring Security
...special ROLE_ prefix. So in Spring security 3 @PreAuthorize("hasRole('ROLE_XYZ')") is the same as @PreAuthorize("hasAuthority('ROLE_XYZ')") and in Spring security 4 @PreAuthorize("hasRole('XYZ')") is the same as @PreAuthorize("hasAuthority('ROLE_XYZ')").
Regarding your use case:
Users have role...
How to iterate object in JavaScript? [duplicate]
...:"1", "name":"DEF"}], "images": [{"id":"0","name":"PQR"},{"id":"1","name":"xyz"}]};
for (item in dictionary) {
for (subItem in dictionary[item]) {
console.log(dictionary[item][subItem].id);
console.log(dictionary[item][subItem].name);
}
}
...
NSDictionary - Need to check whether dictionary contains key-value pair or not
...objectForKey:@"b". If it returns nil, no object is set at that key.
if ([xyz objectForKey:@"b"]) {
NSLog(@"There's an object set for key @\"b\"!");
} else {
NSLog(@"No object set for key @\"b\"");
}
Edit: As to your edited second question, it's simply NSUInteger mCount = [xyz count];. B...
Confused about stdin, stdout and stderr?
...r clever).
An example being:
my_prog <inputfile 2>errorfile | grep XYZ
which will:
create a process for my_prog.
open inputfile as your standard input (file handle 0).
open errorfile as your standard error (file handle 2).
create another process for grep.
attach the standard output of my...
Difference between string object and string literal [duplicate]
...
As Strings are immutable, when you do:
String a = "xyz"
while creating the string, the JVM searches in the pool of strings if there already exists a string value "xyz", if so 'a' will simply be a reference of that string and no new String object is created.
But if you say:...
苹果全球开发者大会：无硬件 iOS 9等三大系统更新 - 资讯 - 清泛网 - 专注C...
...i会提醒你应该出发的时间。iOS 9还将提供更深层面的信息搜索，苹果甚至提供了搜索的API接口，这样用户可以搜索到APP内部的信息等更多内容。
在日常使用方面iOS 9将提供更为智能的体验，当你早上拿起iPhone的第一时间，它会...
Is there a “null coalescing” operator in JavaScript?
...{
return arguments[i];
}
}
return null;
}
var xyz = {};
xyz.val = coalesce(null, undefined, xyz.val, 5);
// xyz.val now contains 5
this solution works like the SQL coalesce function, it accepts any number of arguments, and returns null if none of them have a value. I...
How to copy commits from one branch to another?
...Suppose I have committed changes to master branch.I will get the commit id(xyz) of the commit now i have to go to branch for which i need to push my commits.
Single commit id xyx
git checkout branch-name
git cherry-pick xyz
git push origin branch-name
Multiple commit id's xyz abc qwe
git checkout b...