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One-line list comprehension: if-else variants
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342
x if y else z is the syntax for the expression you're returning for each element. Thus you need:...
Definition of a Balanced Tree
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124
The constraint is generally applied recursively to every subtree. That is, the tree is only bal...
Java: How to set Precision for double value? [duplicate]
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Feb 13 '13 at 3:32
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How to avoid “RuntimeError: dictionary changed size during iteration” error?
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In Python 2.x calling keys makes a copy of the key that you can iterate over while modifying the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is ...
SQL JOIN and different types of JOINs
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edited Mar 7 '18 at 19:23
TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
answered N...
What does O(log n) mean exactly?
...hm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials.
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DateTime format to SQL format using C#
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221
try this below
DateTime myDateTime = DateTime.Now;
string sqlFormattedDate = myDateTime.ToSt...
How to check if smtp is working from commandline (Linux) [closed]
...ort_number}
So telnet to your smtp server like
telnet smtp.mydomain.com 25
And copy and paste the below
helo client.mydomain.com
mail from:<sender@mydomain.com>
rcpt to:<to_email@mydomain.com>
data
From: test@mydomain.com
Subject: test mail from command line
this is test number 1
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Removing viewcontrollers from navigation stack
...ew controller from navigation stack.
[navigationArray removeObjectAtIndex: 2]; // You can pass your index here
self.navigationController.viewControllers = navigationArray;
[navigationArray release];
Hope this will help you.
Edit: Swift Code
guard let navigationController = self.navigationContro...
Windows batch file file download from a URL
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With PowerShell 2.0 (Windows 7 preinstalled) you can use:
(New-Object Net.WebClient).DownloadFile('http://www.example.com/package.zip', 'package.zip')
Starting with PowerShell 3.0 (Windows 8 preinstalled) you can use Invoke-WebRequest:
I...