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How can I add new array elements at the beginning of an array in Javascript?
...push - add an element to the beginning/end of an array
shift/pop - remove and return the first/last element of an array
A simple diagram...
unshift -> array <- push
shift <- array -> pop
and chart:
add remove start end
push X X
pop ...
Partly JSON unmarshal into a map in Go
My websocket server will receive and unmarshal JSON data. This data will always be wrapped in an object with key/value pairs. The key-string will act as value identifier, telling the Go server what kind of value it is. By knowing what type of value, I can then proceed to JSON unmarshal the value int...
How to attach my repo to heroku app
I create a heroku app and then my machine crashed. I have a new machine. How do I attach my existing app to heroku app. When I visit heroku page the url for my app is like this
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ipython notebook clear cell output in code
In a iPython notebook, I have a while loop that listens to a Serial port and print the received data in real time.
3 Answ...
How to check if an object is a generator object in python?
...ance(gen, (types.GeneratorType, map, filter)) is useful to also detect map and filter. This will still not include other iterables and iterators though.
– jlh
May 2 at 14:32
a...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
I'm putting in some effort to learn Python, and I am paying close attention to common coding standards. This may seem like a pointlessly nit-picky question, but I am trying to focus on best-practices as I learn, so I don't have to unlearn any 'bad' habits.
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Read/Write String from/to a File in Android
...Text. Then I want the same file to return the inputted text in String form and save it to another String which is to be used later.
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How to use ssh agent forwarding with “vagrant ssh”?
...onfig.ssh.forward_agent to TRUE in the Vagrantfile, then rebooted the VM, and tried using:
9 Answers
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angularjs: ng-src equivalent for background-image:url(…)
...url before angularjs gets to evaluate the variables placed in between {{ and }} .
9 Answers
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How to match, but not capture, part of a regex?
...regular expression matches only apple or banana if it’s preceded by 123- and followed by -456, or it matches the empty string if it’s preceded by 123- and followed by 456.
|Lookaround | Name | What it Does |
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