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CSS “and” and “or”
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Are we really still concerned with supporting older versions of IE in 2018? Not even Microsoft does.
– Anomaly
Mar 15 '18 at 12:18
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JavaScript query string [closed]
...possibility of an array in a query string that is represented as such ?val=foo&val=bar&val=baz how would you accomodate this?
– Russ Bradberry
Dec 30 '10 at 21:24
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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The first version is preferable:
It works for all kinds of keys, so you can, for example, say {1: 'one', 2: 'two'}. The second variant only works for (some) string keys. Using different kinds of syntax depending on the type of the keys would be an unnecessary inconsisten...
Rails: confused about syntax for passing locals to partials
...:partial => 'foo', :locals => {blah blah blah}) then it will pass in all of your arguments as a hash and parse them accordingly.
If you pass in a string as your first argument, it assumes the first argument is your partial name, and will pass the remainder as your locals. However, in that s...
JUnit test for System.out.println()
... outputs the version string, etc etc)
Edit:
Prior versions of this answer called System.setOut(null) after the tests; This is the cause of NullPointerExceptions commenters refer to.
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How to configure an existing git repo to be shared by a UNIX group
...ritable by me. I want to open it up to some UNIX user group, foo, so that all members of foo can push to it. I'm aware that I can easily set up a new git repo with:
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Diff output from two programs without temporary files
... use >(command) if you want to pipe something into a command.
This is called "Process Substitution" in Bash's man page.
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
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Technically, the first raises a RuntimeError with the message set to "foo", and the second raises an Exception with the message set to "foo".
Practically, there is a significant difference between when you would want to use the former and when you want to use the latter.
Simply put, you prob...
C#泛型(List)中基类和子类 怎么转换？ - .NET(C#) - 清泛IT论坛，有思想、有深度
List<ChildClass> childList = ...
Foo(List<BaseClass> baseList);
需求：把子类列表传入函数Foo，Foo支持所有子类列表。
方法一：
Foo(childList.Select(p => p as BaseClass).ToList())
上述 Select 转换是双向的，基类转子类也没问题。
方...
Why does instanceof return false for some literals?
...) {}); // function
As you can see objects, arrays and the value null are all considered objects (null is a reference to an object which doesn't exist). Functions are distinguished because they are a special type of callable objects. However they are still objects.
On the other hand the literals t...