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What does “=>” mean in PHP?
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Finding the mode of a list
... The first returns an error, while the second returns the first mode.
In order to find the modes of a set, you could use this function:
def mode(array):
most = max(list(map(array.count, array)))
return list(set(filter(lambda x: array.count(x) == most, array)))
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iOS 7 - Failing to instantiate default view controller
...pearing in the Simulator along with a black screen. I did the following in order for my app to appear in the Simulator.
Go to Main.storyboard.
Check the Is Initial View Controller under the Attributes inspector tab.
s...
When to use a View instead of a Table?
...view which called a view and so many millions of records were generated in order to see the three the user ultimately needed. I remember one of these views took 8 minutes to do a simple count(*) of the records. Views calling views are an extremely poor idea.
Views are often a bad idea to use to upd...
When does System.gc() do something?
...throwing an OOM, the JVM will already have attempted to garbage collect in order to free up memory
– Scrubbie
Oct 6 '15 at 21:22
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What is the difference between . (dot) and $ (dollar sign)?
...ns to be chained together without adding parentheses to control evaluation order:
Prelude> head (tail "asdf")
's'
Prelude> head $ tail "asdf"
's'
The compose operator (.) creates a new function without specifying the arguments:
Prelude> let second x = head $ tail x
Prelude> second "...
Remove blue border from css custom-styled button in Chrome
...ge, and I want custom-styled <button> tags. So with CSS, I said: border: none . Now it works perfectly in safari, but in chrome, when I click one of the buttons, it puts an annoying blue border around it. I thought button:active { outline: none } or button:focus { outline:none } would w...
Setting UIButton image results in blue button in iOS 7
...mal states. If you're looking to preserve the system behavior, animations, etc., but want to get rid of the tint color, try [myUIButton setImage: [[UIImage imageNamed: @"myButtonImage"] imageWithRenderingMode: UIImageRenderingModeAlwaysOriginal] forState: UIControlStateNormal]; (with the button type...
How to find out if a Python object is a string?
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In order to check if your variable is something you could go like:
s='Hello World'
if isinstance(s,str):
#do something here,
The output of isistance will give you a boolean True or False value so you can adjust accordingly.
Y...
Google Map API v3 — set bounds and center
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