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Why should I use version control? [closed]
...re "advanced" features like branching and merging let you have multiple parallel lines of development. You can work in two simultaneous features without interference and switch back and forth without much hassle.
You can see "what changed". This may sound basic, but that's something I find myself ch...
Can I make a function available in every controller in angular?
If I have a utility function foo that I want to be able to call from anywhere inside of my ng-app declaration. Is there someway I can make it globally accessible in my module setup or do I need to add it to the scope in every controller?
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Copy array items into another array
...y . Except I don't want newArray[0] to be dataArray . I want to push in all the items into the new array:
16 Answers
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If list index exists, do X
... that relative index from the end of the list...
However, by definition, all items in a Python list between 0 and len(the_list)-1 exist (i.e., there is no need for a try, except if you know 0 <= index < len(the_list)).
You can use enumerate if you want the indexes between 0 and the last el...
Extract a regular expression match
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Use the new stringr package which wraps all the existing regular expression operates in a consistent syntax and adds a few that are missing:
library(stringr)
str_locate("aaa12xxx", "[0-9]+")
# start end
# [1,] 4 5
str_extract("aaa12xxx", "[0-9]+")
# [1]...
What's the difference between a single precision and double precision floating point operation?
...as the greater data precision available with 64-bit data types is not typically required by 3D games, as well as the fact that processing 64-bit data uses twice as much RAM, cache, and bandwidth, thereby reducing the overall system performance.
From Webopedia:
The term double precision is some...
Android Task Affinity Explanation
...ayer stack of activities, and two of them were the same activity. Popping all 5 off the stack will create the phenomenon where you will be interacting with two different versions of the same activity and can be quite confusing.
Users don't usually think in terms of a rigid stack of activities. ...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
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As per the documentation: This allows you to switch from the default ASCII to other encodings such as UTF-8, which the Python runtime will use whenever it has to decode a string buffer to unicode.
This function is only available at Python start-up time,...
Difference between using Throwable and Exception in a try catch
...catching Throwable it includes things that subclass Error. You should generally not do that, except perhaps at the very highest "catch all" level of a thread where you want to log or otherwise handle absolutely everything that can go wrong. It would be more typical in a framework type application (f...
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
... 8.8.8.8
Address 1: 8.8.8.8
If the command appears to hang, but eventually spits out the error "can't resolve 'google.com'", then you have the same problem as me.
The nslookup command queries the DNS server 8.8.8.8 in order to turn the text address of 'google.com' into an IP address. Ironicall...