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Big-O for Eight Year Olds? [duplicate]
...rd time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't grow because there are more items. And an O(n) operation would mean that you would perform a se...
How to get root view controller?
...
if you are trying to access the rootViewController you set in your appDelegate. try this:
Objective-C
YourViewController *rootController = (YourViewController*)[[(YourAppDelegate*)
[[UIApp...
How to read data from a zip file without having to unzip the entire file
...p = ZipFile.Read(ExistingZipFile))
{
foreach (ZipEntry e in zip)
{
if (header)
{
System.Console.WriteLine("Zipfile: {0}", zip.Name);
if ((zip.Comment != null) && (zip.Comment != ""))
System.Console.WriteLine("Comment: {0}", zip.Comment);
System.Console....
How do you round UP a number in Python?
... does not have strongly-typed variables) and the function returns a float. If you want an int, you can construct an int from the return value, i.e., int(math.ceil(363))
– R. W. Sinnet
Aug 26 '15 at 23:37
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Difference between git checkout --track origin/branch and git checkout -b branch origin/branch
Does anybody know the difference between these two commands to switch and track a remote branch?
4 Answers
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PHP script - detect whether running under linux or Windows?
...t that may be placed on a windows system or a linux system. I need to run different commands in either case.
14 Answers
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How does clipsToBounds work?
...
If my superview is a box measuring 10 units on each side, and my subview is 20 units wide, with clipsToBounds set to YES, I'll only see the part of the subview that fits within the bounds of the superview. Otherwise, if clip...
How to delete migration files in Rails 3
...rsion before the one I want to delete.
Delete the migration file manually.
If there are pending migrations (i.e., the migration I removed was not the last one), I just perform a new rake db:migrate again.
If your application is already on production or staging, it's safer to just write another mig...
What is the pythonic way to detect the last element in a 'for' loop?
...ial case instead of the last one:
first = True
for data in data_list:
if first:
first = False
else:
between_items()
item()
This will work for any iterable, even for those that have no len():
file = open('/path/to/file')
for line in file:
process_line(line)
#...
Labels for radio buttons in rails form
... to Rails, I've found this answer the one I keep coming back to. It's the gift that keeps on giving. Well, until I remember the proper syntax anyway... :)
– John Gallagher
Oct 20 '11 at 19:14
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