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Change the name of the :id parameter in Routing resources for Rails
...amp; 5
In Rails 4, the :param option was added, which seems to do exactly what you're looking for. You can take a look at the Rails 3 code compared to the Rails 4 code.
Details
You can easily implement this in your routes.rb file:
# config/routes.rb
resources :posts, param: :slug
# app/control...
When should I use std::thread::detach?
...w join() waits until a thread completes. This is easy to understand, but what's the difference between calling detach() and not calling it?
...
Check if a given key already exists in a dictionary and increment it
...import defaultdict
my_dict = defaultdict(int)
my_dict[key] += 1
will do what you want.
For regular Python dicts, if there is no value for a given key, you will not get None when accessing the dict -- a KeyError will be raised. So if you want to use a regular dict, instead of your code you would ...
How can I tell when HttpClient has timed out?
...) {} Only the general exception is caught, not the TaskCanceledException. What is wrong in my version of code?
– Naomi
Nov 22 '16 at 14:06
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How to use Session attributes in Spring-mvc
...
What about RequestContextHolder?
– user1589188
May 29 '19 at 4:24
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Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
...et the data we needed. For example, our business logic would query half of what it needed from context 1 and the other half from context 2. This had some major issues. Instead of performing one query against a single context, we had to perform multiple queries across different contexts. This has a r...
How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
...well done for being the only one (of 5 I can see) who actually pointed out what was wrong with the code presented. +1
– Mike Woodhouse
Nov 26 '09 at 11:12
54
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Static variable inside of a function in C
What will be printed out? 6 6 or 6 7? And why?
13 Answers
13
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How do I create a multiline Python string with inline variables?
...; s.format(**d)
'This is an example with variables'
The closest thing to what you asked (in terms of syntax) are template strings. For example:
>>> from string import Template
>>> t = Template("This is an $example with $vars")
>>> t.substitute({ 'example': "example", 'v...
Append an object to a list in R in amortized constant time, O(1)?
...here is a way to append objects to an R list in "amortized constant time". What does that mean? To explain, first let me describe "constant time":
Constant or O(1) growth:
If the time required to perform a given task remains the same as the size of the problem doubles, then we say the algorithm e...