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How do I use the conditional operator (? :) in Ruby?
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It is the ternary operator, and it works like in C (the parenthesis are not required). It's an expression that works like:
if_this_is_a_true_value ? then_the_result_is_this : else_it_is_this
However, in Ruby, if is also an expression so: if a then b ...
How to check if an array value exists?
...ray_search
*
* array_search — Searches the array for a given value
* and returns the corresponding key if successful
*
* DOES NOT WORK FOR MULTI-DIMENSIONAL ARRAY
*++++++++++++++++++++++++++++++++++++++++++++++
*/
$something = array('a' => 'bla', 'b' => 'omg');
if (array_search('bla'...
Automate ssh-keygen -t rsa so it does not ask for a passphrase
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OK this was because I used dzdo command in front of it, so I had to write: dzdo -i -u target_user ssh-keygen -f id_rsa -t rsa -N "''"
– Anthony O.
Dec 9 '15 at 15:09
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What is a serialVersionUID and why should I use it?
...VersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiver has loaded a class for the object that has a different serialVersionUID than that of t...
How to replace a hash key with another key
...akes some time to tell what it is really doing. Your solution is in other hand simple and descriptive.
– Lucas
Nov 13 '14 at 18:55
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How to add a WiX custom action that happens only on uninstall (via MSI)?
...ed it out.
There are some solutions online, but none of them really works. And of course there is no documentation.
So in the chart below there are several properties that are suggested to use and the values they have for various installation scenarios:
So in my case I wanted a CA that will run o...
How to change the text of a button in jQuery?
...e of a button in jQuery? Currently, my button has 'Add' as its text value, and upon being clicked I want it to change to 'Save'. I have tried this method below, but so far without success:
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Alter a MySQL column to be AUTO_INCREMENT
... The only thing that may be influenced by the number is the display width, and it is up to the client to do that. But don't be deceived and think that it works like it does for VARCHAR and DECIMAL types - in those cases, the amount of data you can store in there is actually specified, whereas a part...
How to link to apps on the app store
...rsion that takes people to the paid version in the app store. If I use a standard link
25 Answers
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Android - shadow on text?
I am wondering how to add shadow on text in android?
6 Answers
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