大约有 12,000 项符合查询结果(耗时:0.0319秒) [XML]

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Are there pronounceable names for common Haskell operators? [closed]

... "b pipe-to a" !! index ! index / strict a ! b: "a index b", foo !x: foo strict x <|> or / alternative expr <|> term: "expr or term" ++ concat / plus / append [] empty list : cons :: of type / as f x :: Int: f x of type Int \ lambda @ ...
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How to URL encode a string in Ruby

... between them is their handling of spaces: >> ERB::Util.url_encode("foo/bar? baz&") => "foo%2Fbar%3F%20baz%26" >> CGI.escape("foo/bar? baz&") => "foo%2Fbar%3F+baz%26" CGI.escape follows the CGI/HTML forms spec and gives you an application/x-www-form-urlencoded string, w...
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Adding data attribute to DOM

...t's essentially decoupled from the data attribute. Example: <div data-foo="bar"></div> If you grabbed the value of the attribute using .data('foo'), it would return "bar" as you would expect. If you then change the attribute using .attr('data-foo', 'blah') and then later use .data('f...
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Factory Pattern. When to use factory methods?

...nstructors - mostly when constructors aren't expressive enough, ie. class Foo{ public Foo(bool withBar); } is not as expressive as: class Foo{ public static Foo withBar(); public static Foo withoutBar(); } Factory classes are useful when you need a complicated process for constructing th...
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How to create a new java.io.File in memory?

...r readme: FileSystem fs = Jimfs.newFileSystem(Configuration.unix()); Path foo = fs.getPath("/foo"); Files.createDirectory(foo); Path hello = foo.resolve("hello.txt"); // /foo/hello.txt Files.write(hello, ImmutableList.of("hello world"), StandardCharsets.UTF_8); ...
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How to check if an object is a generator object in python?

... >>> import inspect >>> >>> def foo(): ... yield 'foo' ... >>> print inspect.isgeneratorfunction(foo) True share | improve this answer ...
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What does enumerate() mean?

...hat to row_number and row, respectively. Demo: >>> elements = ('foo', 'bar', 'baz') >>> for elem in elements: ... print elem ... foo bar baz >>> for count, elem in enumerate(elements): ... print count, elem ... 0 foo 1 bar 2 baz By default, enumerate() starts...
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Singleton: How should it be used

...to prevent people from accedentally doing so. When I have a local variable foo1 of type Foo in my small function and only want one in the function, I'm not worried that someone is going to create a second Foo varaible foo2 and use that instead of the original one. – Thomas Edin...
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An “and” operator for an “if” statement in Bash

.... For example : STATUS=; [ $STATUS -ne 13 ] 2>/dev/null && echo foo does not output foo, even though it should (empty is different from 13). What you first suggested, ${STATUS:-0} looks far better. – Julien Vivenot Nov 16 '12 at 0:42 ...
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Docker: adding a file from a parent directory

...r is to use a volume pointing to the parent folder: #docker-composer.yml foo: build: foo volumes: - ./:/src/:ro But I'm pretty sure the can be done playing with volumes in Dockerfile. share | ...