Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

How can I override Hash native brackets ([] access)

class Hash
  def [] key
    value = fetch key rescue
    case key
    when Symbol then "#{value}, as usual"
    when String then "#{value}, hooray!"
    else value end

Categories : Ruby

Related to : How can I override Hash native brackets ([] access)
How to get out of the brackets using the TAB key in PyDev?
I have pydev but I couldn't find a key to jump to the end of the quotation marks. The closest I could see is Ctrl+Shift+P that takes me to the matching bracket. However I thought following may be useful for you: Hit Ctrl+Shift+L --> This will show you a list of all shortcut keys available If you hit Ctrl+Shift+L again it will take you to a preferences page where you can see what all are a

Categories : Python
Should I use list() or wrap in brackets?
You should not do either one. list.append works in-place and always returns None. So, mydict[my_key][my_value] will be assigned to None after Python executes either of those lines. You need to call list.append on its own line: mydict[my_key][my_value] = [mydict[my_key][my_value]] mydict[my_key][my_value].append(new_value) Also, list() and [] are two different things. Putting mydict[my_key]

Categories : Python
How to replace double quoutes with brackets?
You could simply use capturing groups and also use [^"] to match any character but not of ", if you use w, it would match only the word characters and it won't work if there is a non-word character present inside the double quotes. s/"([^"]*)"/[$1]/g; Example: use strict; use warnings; my $string = '"test", "default", "left","right"'; $string =~ s/"([^"]*)"/[$1]/g; print "$string "; Output:

Categories : Regex
Using sed to extract a substring in curly brackets
This might work sed -e 's/[^{]*({[^}]*}).*/1/g' Test $ echo "integration@{Wed Nov 19 14:17:32 2014} branch: thebranch" | sed -e 's/[^{]*{([^}]*)}.*/1/g' Wed Nov 19 14:17:32 2014 Regex [^{]* Matches anything other than the {, That is integration@ ([^}]*) Capture group 1 { Matches { [^}]* matches anything other than }, That is Wed Nov 19 14:17:32 2014 } matches a } .* matches the rest

Categories : Bash
Why do brackets mess up this math in objective-c?
It's just integer math and the usual rules for promotion of types. height * 6/4 == (height * (double)6) / (double)4 == (height * 6.0) / 4.0 whereas: height * (6/4) == height * (double)(1) == height * 1.0 since 6/4 == 1 and the parentheses force this to be evaluated first before promoting it to double. This is the same behaviour as in C, C++, Objective-C, et al, so you shouldn't be too surpr

Categories : IOS
Recently Add
ruby self in an instance methods in a module
Problems with rspec scope in before blocks
Querying a specific cell with known column and row
Parsing through nested hash using .present? - undefined method `[]' for nil:NilClass (NoMethodError)
"params" doesn't work in Ruby (Sinatra framework)
Specifying a Puppet + Ruby version matrix in CircleCI
How to upload a file using RestClient in Ruby?
Shibboleth authentication in Rails
Random, intermittent "argument out of range" error while parsing CSV and parsing time
Ruby: Wrong number of Arguments for a subclass changes number of arguments
amalgamate two ruby arrays
Geocoder request.location returns nil
Access most recent table row and its data
how to search multiple word in the same file using ruby and the get the output which contains those words
MongoDB search query for stats
rake command parsing options after --
Ruby: cannot load such file - LoadError
Understanding attributes in AWS DynamoDB with Ruby
Ruby: Get last character from user input
Undefined method 'delegate' for capybara::dsl::module
neo4j ruby wrapper create or update
'on raise' hook in ruby
Ruby OCI8 - bind optional parameters to Oracle Stored procedure
How to install the app only once for the suite
Different test unit output in Rubymine and console
Can Rake run each test in a separate Ruby instance?
Ruby strftime in UK format i.e. dd/mm/yy
Accessing hash in Ruby like objects in Coffeescript
How do I correct my script, that it doesn't matter what file name has the .xml that is uploaded?
Ruby: Tests not runing
© Copyright 2017 Publishing Limited. All rights reserved.