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What does the “@” symbol mean in reference to lists in Haskell?
...in your function. One example where this is the case is the tails function from the standard library:
tails :: [a] -> [[a]]
tails [] = [[]]
tails xxs@(_:xs) = xxs : tails xs
sha...
Git diff to show only lines that have been modified
...33\[3[12]m'
Explanation:
The git diff --color is needed to prevent git from disabling the color when it is piping.
The grep --color=never is to prevent grep removing the original color and highlighting the matched string.
We are matching for lines that start with red (\e[31m) or green (\e[32m) e...
How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
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How to click first link in list of items after upgrading to Capybara 2.0?
...ar one. You should be able to match with this.
A working example example from one of my projects:
within page.find("div.panel", text: /Proposals/) do
within page.find('tr', text: /Foo/) do
page.should have_xpath('td[3]', text: @today)
end
end
...
How to execute AngularJS controller function on page load?
...on architecture of your app.
I used ng-init when I wanted to pass a value from back-end into angular app:
<div data-ng-controller="myCtrl" data-ng-init="init('%some_backend_value%')"></div>
share
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Android - Start service on boot
From everything I've seen on Stack Exchange and elsewhere, I have everything set up correctly to start an IntentService when Android OS boots. Unfortunately it is not starting on boot, and I'm not getting any errors. Maybe the experts can help...
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How to download a file with Node.js (without using third-party libraries)?
... @quantumpotato Take a look at the response you're getting back from your request
– Michelle Tilley
May 8 '18 at 18:30
7
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$apply vs $digest in directive testing
...y in controllers or in
directives. Instead a call to $apply() (typically from within a
directives) will force a $digest().
So you should not explicitly call $digest, you calling $apply method would trigger a digest cycle.
...
How to name variables on the fly?
... Well of course. But most people seeking this answer aren't doing so from a position of having rejected a list for their application.
– Ari B. Friedman
Aug 2 '12 at 13:15
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How do I parse a YAML file in Ruby?
...
Here is the one liner i use, from terminal, to test the content of yml file(s):
$ ruby -r yaml -r pp -e 'pp YAML.load_file("/Users/za/project/application.yml")'
{"logging"=>
{"path"=>"/var/logs/",
"file"=>"TacoCloud.log",
"level"=>...