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How to filter (key, value) with ng-repeat in AngularJs?
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Note: This is a perf anti-pattern now. Angular 1.3 has stateless filters now (egghead.io/lessons/…) so you'd definitely want to create a filter for this.
– kentcdodds
Oct 28 '14 at 22:57
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How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.ev...
How to sign an android apk file
... Application, and click
Next.
The Export Android Application wizard now starts, which will guide
you through the process of signing
your application, including steps for
selecting the private key with which
to sign the .apk (or creating a new
keystore and private key).
Complete th...
Why is “except: pass” a bad programming practice?
... catch any error
When using a try block, you usually do this because you know that there is a chance of an exception being thrown. As such, you also already have an approximate idea of what can break and what exception can be thrown. In such cases, you catch an exception because you can positively ...
Nested function in C
... Other languages supported by GCC do have them (ADA and Pascal that I know of), so it is likely that either it was easy to add to the C implementation or that it was added to C in order to make in preparation for supporting languages which require them.
– nategoose
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Is gcc 4.8 or earlier buggy about regular expressions?
...the implementation.
Most parts of the library were more complete and are now almost fully implemented, but <regex> hadn't been, so it stayed in the same unfinished state since it was added.
Seriously though, who though that shipping an implementation of regex_search that only does "retur...
Ruby, remove last N characters from a string?
...in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.delete_suffix('123') # => "abc"
'abc123'.delete_suffix!('123') # => "abc"
It's even significantly...
How can I index a MATLAB array returned by a function without first assigning it to a local variable
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well what do you know! though i agree it's pretty ugly, and probably less readable than a temp-var solution. +1 for impressive obscure matlab knowledge!
– second
Sep 2 '10 at 16:02
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Handlebars.js Else If
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Handlebars now supports {{else if}} as of 3.0.0.
Therefore, your code should now work.
You can see an example under "conditionals" (slightly revised here with an added {{else}}:
{{#if isActive}}
<img src="star.gif" alt="A...
Safely limiting Ansible playbooks to a single machine?
...Note the comma (,) at the end; this signals that it's a list, not a file.
Now, this won't protect you if you accidentally pass a real inventory file in, so it may not be a good solution to this specific problem. But it's a handy trick to know!
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