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How is pattern matching in Scala implemented at the bytecode level?
...but see below about custom extractors
case "hello" // equality check
case _ : Foo // instance of check
case x => // assignment to a fresh variable
case _ => // do nothing, this is the tail else on the if/else
There's much more that you can do with patterns like or patterns and combinations ...
VIM + JSLint?
...cter"] + 1) + ":" + obj["reason"] );
This makes in mylintrun.js output a error list that can be used with the VIM quickfix window (:copen).
Now set the following in VIM:
set makeprg=cat\ %\ \\\|\ /my/path/to/js\ /my/path/to/mylintrun.js\ %
set errorformat=%f:%l:%c:%m
where you have to change /...
When to use Comparable and Comparator
... | Comparable | Comparator
._______________________________________________________________________________
Is used to allow Collections.sort to work | yes | yes
Can compare multiple fields | yes ...
How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Converting Integer to Long
I need to get the value of a field using reflection. It so happens that I am not always sure what the datatype of the field is. For that, and to avoid some code duplication I have created the following method:
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Get object by id()? [duplicate]
...to the object, e.g: TypeError: cannot create weak reference to 'lxml.etree._Element' object
– darkk
Jun 23 '11 at 9:17
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How can I start an interactive console for Perl?
...n OSX 10.10 (Perl 5.18.2) nor on Ubuntu 14.04 (Perl 5.18.2): I get runtime errors complaining about missing modules; installed one, then gave up after another missing module was reported.
– mklement0
Jul 7 '15 at 16:31
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Supabase 拓展：App 接入 Supabase 后端服务（Auth + PostgreSQL + Storage...
...获取 ProjectUrl、PublishableKey 和 AccessToken。
跨页面使用提示：扩展组件不能跨页面引用。如果 Auth 在登录页面、其他组件在主页面，无法通过 SupabaseAuth 属性引用。此时应在登录成功后保存 AccessToken（如存入 TinyDB），然后在主...
Qt: can't find -lGL error
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@Cuadue: The GL in the error and in libgl1-... is for OpenGL, a fundamental dependency of Qt 5.x. This is a common error for devs when setting up for Qt development -- but once they install the OpenGL development lib they never see it again.
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What is the session's “secret” option?
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answered Mar 17 '11 at 18:05
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