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How to set UICollectionViewDelegateFlowLayout?
...NSCollectionViewDelegateFlowLayout**
{
the method:
func collectionView(_ collectionView: NSCollectionView,
layout collectionViewLayout: NSCollectionViewLayout,
sizeForItemAt indexPath: IndexPath) -> NSSize
will be called.
If removed, no delegate meth...
How to use putExtra() and getExtra() for string data
...een.this, SecondScreen.class);
String strName = null;
i.putExtra("STRING_I_NEED", strName);
Then, to retrieve the value try something like:
String newString;
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
newString= null;
} e...
Convert NSDate to NSString
...less ARC is active
[formatter release];
Swift 4.2 :
func stringFromDate(_ date: Date) -> String {
let formatter = DateFormatter()
formatter.dateFormat = "dd MMM yyyy HH:mm" //yyyy
return formatter.string(from: date)
}
...
How to print (using cout) a number in binary form?
...
Thanks Jerry, I discovered to_string minutes later. FYI, casting doesn't work, the bitset variable is an object of some really arcane-looking bitset3ul (?!) class. Best to let the abstractions do the work!
– nirvanaswap
...
How can I calculate the difference between two dates?
...fference between two dates in days.
#1. Using Calendar's dateComponents(_:from:to:) method
import Foundation
let calendar = Calendar.current
let startDate = calendar.date(from: DateComponents(year: 2010, month: 11, day: 22))!
let endDate = calendar.date(from: DateComponents(year: 2015, month: ...
How to ssh to vagrant without actually running “vagrant ssh”?
...=/dev/null \
-o StrictHostKeyChecking=no \
-i ~/.vagrant.d/insecure_private_key \
vagrant@localhost \
-p $PORT \
"$@"
As a one-liner (with thanks to kgadek):
ssh $(vagrant ssh-config | awk 'NR>1 {print " -o "$1"="$2}') localhost
To account for when you have more than one ...
unix - head AND tail of file
... 10; my @buf = (); while (<>) { print if $. <= $size; push(@buf, $_); if ( @buf > $size ) { shift(@buf); } } print "------\n"; print @buf;'
share
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improve this answer
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...
How do I use boolean variables in Perl?
...n true and false, so not only does it have booleans, it has true (!0 aka PL_sv_yes) and false (!1 aka PL_sv_no). Or are you saying Perl should croak whenever something other than these two values are tested for truthness? That would be completely awful. e.g. It would prevent $x ||= $default;
...
Keyboard shortcuts with jQuery
...at's probably the easiest plugin I've ever used!
– d-_-b
May 19 '12 at 0:07
working with this out of the box it does n...
How do I create a PDO parameterized query with a LIKE statement?
...s how to use LIKE with % partial matching for MySQL databases: WHERE column_name LIKE CONCAT('%', :dangerousstring, '%')
where the named parameter is :dangerousstring.
In other words, use explicitly unescaped % signs in your own query that are separated and definitely not the user input.
Edit: ...