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Why are exclamation marks used in Ruby methods?
...ral, methods that end in ! indicate that the method will modify the object it's called on. Ruby calls these as "dangerous methods" because they change state that someone else might have a reference to. Here's a simple example for strings:
foo = "A STRING" # a string called foo
foo.downcase! # ...
Nginx serves .php files as downloads, instead of executing them
I am installing a website in a droplet (Digital Ocean). I have a issue for install NGINX with PHP properly. I did a tutorial https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 but when I try to run some .php file it's just downloading i...
No internet on Android emulator - why and how to fix? [closed]
I am trying to use internet with the Android emulator, but with no success.
Any ideas?
10 Answers
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Is it true that one should not use NSLog() on production code?
I was told this a few times in this very site, but I wanted to make sure this is really the case.
12 Answers
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What happens when a duplicate key is put into a HashMap?
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By definition, the put command replaces the previous value associated with the given key in the map (conceptually like an array indexing operation for primitive types).
The map simply drops its reference to the value. If nothing el...
Xcode : failed to get the task for process
...follow
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edited Mar 26 '17 at 18:06
answered Sep 20 '13 at 13:52
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Activity has leaked ServiceConnection @438030a8 that was original
I'm working on my first Android app. I've got three activities in my app, and the user switches back and forth pretty frequently. I've also got a remote service, which handles a telnet connection. The apps need to bind to this service in order to send/receive telnet messages.
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Create an Array of Arraylists
...ayList<Individual>>(4);
As suggested by Tom Hawting - tackline, it is even better to do:
List<List<Individual>> group = new ArrayList<List<Individual>>(4);
share
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Creating an Android trial application that expires after a fixed time period
I have an application which I want to hit the market as a Paid app. I would like to have other version which would be a "trial" version with a time limit of say, 5 days?
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How do I create a Bash alias?
...en I had bought my Mac, the .bash_login file wasn't there. I had to create it for myself so that I could put prompt info, alias, functions, etc. in it.
Here are the steps if you would like to create one:
Start up Terminal
Type cd ~/ to go to your home folder
Type touch .bash_profile to create yo...