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Difference between break and continue statement
...n the loop.
This Code Explains Everything :
public static void main(String[] args) {
for(int i=0;i<10;i++)
{
if (i==4)
{
break;
}
System.out.print(i+"\t");
}
System.out.println();
for(int i=0;i<10;i++)
{
if (i...
Where did the name `atoi` come from?
...he C language where did they come up with the name atoi for converting a string to an integer? The only thing I can think of is Array To Integer for an acronym but that doesn't really make sense.
...
Using module 'subprocess' with timeout
...put = check_output(cmd, stderr=STDOUT, timeout=seconds)
output is a byte string that contains command's merged stdout, stderr data.
check_output raises CalledProcessError on non-zero exit status as specified in the question's text unlike proc.communicate() method.
I've removed shell=True becaus...
Select values from XML field in SQL Server 2008
...ome of these suggestions confusing. Whenever I used value with [1] in the string, it would only retrieved the first value. And some suggestions recommended using cross apply which (in my tests) just brought back far too much data.
So, here's my simple example of how you'd create an xml object, th...
How do I parallelize a simple Python loop?
... output3.append(out3)
finish = time.time()
# these kinds of format strings are only available on Python 3.6:
# time to upgrade!
print(f'original inputs: {repr(output1)}')
print(f'total time to execute {sum(output2)} = sum({repr(output2)})')
print(f'time saved by parallelizing...
How to check iOS version?
...if UIPopoverController is available on the current device using NSClassFromString:
if (NSClassFromString(@"UIPopoverController")) {
// Do something
}
For weakly linked classes, it is safe to message the class, directly. Notably, this works for frameworks that aren't explicitly linked as "Requ...
Is it safe to push_back an element from the same vector?
... a copy of t. Requires: T shall be CopyInsertable into X. Container basic_string, deque, list, vector
So even though it's not exactly trivial, the implementation must guarantee it will not invalidate the reference when doing the push_back.
...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...T:
extension NSLayoutConstraint {
override public var description: String {
let id = identifier ?? ""
return "id: \(id), constant: \(constant)" //you may print whatever you want here
}
}
OBJECTIVE-C
@interface NSLayoutConstraint (Description)
@end
@implementation NSL...
Virtual member call in a constructor
...tual void DoSomething()
{
}
}
class Child : Parent
{
private string foo;
public Child()
{
foo = "HELLO";
}
protected override void DoSomething()
{
Console.WriteLine(foo.ToLower()); //NullReferenceException!?!
}
}
The answer is that in fact...
namespaces for enum types - best practices
...default for newly-created enums,
add further methods, like for returning a string representation of a choice.
Just note that you need to declare operator enum_type() so that C++ would know how to convert your class into underlying enum. Otherwise, you won't be able to pass the type to a switch sta...