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How to check if a specific key is present in a hash or not?
...a)
=> true
Be sure to use the symbol key or a string key depending on what you have in your hash:
{'a' => 2}.key?(:a)
=> false
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Passing data between a fragment and its container activity
...Thanks good answer, to the point. This is also very nicely explained here. What I didn't realize is that you can implement multiple interfaces, I was already implementing a ActionBar.TabListener and had to add an additional interface.
– Eugene van der Merwe
Aug...
How to use icons and symbols from “Font Awesome” on Native Android Application
...I tested this in a Lenovo with Android 4.2.2 and the icons dont showed up, what can be?
– Ollie Strevel
Feb 23 '17 at 21:40
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How do I create a new Swift project without using Storyboards?
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what is the best practice , self.window! or using if let window = .. ?
– laughingman
Feb 20 '15 at 5:56
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How do I use Ruby for shell scripting?
...on't know Ruby very well at all, so you'll want to check to make sure it's what you intended.
– Bill the Lizard
Mar 6 '10 at 13:52
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How to open a local disk file with JavaScript?
...currently use this with development versions of Chrome (6.x). I don't know what other browsers support it.
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psql: FATAL: database “” does not exist
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This will simply create a database for your login user, which I think is what you are looking for. If createdb fails, then you don't have enough rights to make your own database, and you will have to figure out how to fix the homebrew package.
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Correctly determine if date string is a valid date in that format
...h has overflown parts, like 13th month (2013-13-01). But it really depends what you want. If you need for example validateDate('2015-55-66') to be valid, then yes, you only need to check if $d is object or not.
– Glavić
Jul 2 '15 at 5:42
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How to get a thread and heap dump of a Java process on Windows that's not running in a console
... In latest java releases Java VisualVM was superceded by JMC/JFR. See also What are the differences between JVisualVM and Java Mission Control?
– Vadzim
Jan 10 '19 at 8:05
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NGINX: upstream timed out (110: Connection timed out) while reading response header from upstream
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What exactly are you optimizing with these declarations?
– Vlad
Feb 19 at 17:08
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