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UIButton: set image for selected-highlighted state
....highlighted])
To set the background image we can use setBackgroundImage(_:for:)
Swift 2.x
// Normal
button.setImage(UIImage(named: "image1"), forState: .Normal)
// Highlighted
button.setImage(UIImage(named: "image2"), forState: .Highlighted)
// Selected
button.setImage(UIImage(named: "image3"...
How can I remove a key and its value from an associative array?
...ample:
$array = array("key1" => "value1", "key2" => "value2");
print_r($array);
unset($array['key1']);
print_r($array);
unset($array['key2']);
print_r($array);
Output:
Array
(
[key1] => value1
[key2] => value2
)
Array
(
[key2] => value2
)
Array
(
)
...
Rails.env vs RAILS_ENV
...
According to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initializer.rb, line 55
def env
@_env ||= ActiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::String...
How to do a batch insert in MySQL
... within
parentheses and separated by commas.
Example:
INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);
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What SOAP client libraries exist for Python, and where is the documentation for them? [closed]
... an error that looks like:
abort: error: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
This was issue1424152 on the Python bug tracker. There are patches attached to the bug report that will fix this in Python 2.x and Python 3.x. The issue is already fixed.
...
Best way to check if a Data Table has a null value in it
...
I will do like....
(!DBNull.Value.Equals(dataSet.Tables[6].Rows[0]["_id"]))
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Where are iOS simulator screenshots stored?
...e also end up on the Desktop as something like: "Screen Shot 2012-04-22 at _ AM.png"
If you use the Grab application (found in /Application/Utilities), you can save those files anywhere you decide. :-)
If you have saved a screenshot to the Photos library from within your app, for example with UIGet...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...w copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Attaching to process 5636
Reading symbols from /usr/bin/tail...(no debugging symbols found)...done.
Reading symbols from /lib/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/librt.so....
How to check if a value exists in an array in Ruby
... as pointed out by @campaterson. So within Rails, or if you require 'active_support', you can write:
'Unicorn'.in?(['Cat', 'Dog', 'Bird']) # => false
OTOH, there is no in operator or #in? method in Ruby itself, even though it has been proposed before, in particular by Yusuke Endoh a top notch ...
Move all files except one
... @UnixBasis, yes. Take a look at gnu.org/software/bash/manual/html_node/Pattern-Matching.html
– Juliano
Mar 22 '09 at 4:07
1
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