大约有 8,300 项符合查询结果(耗时:0.0318秒) [XML]

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Is there a simple, elegant way to define singletons? [duplicate]

There seem to be many ways to define singletons in Python. Is there a consensus opinion on Stack Overflow? 21 Answers ...
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Multiple working directories with Git?

I'm not sure if this is something supported by Git, but in theory it seems like it should work to me. 4 Answers ...
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Append value to empty vector in R?

I'm trying to learn R and I can't figure out how to append to a list. 8 Answers 8 ...
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Base64 encoding and decoding in client-side Javascript

... Some browsers such as Firefox, Chrome, Safari, Opera and IE10+ can handle Base64 natively. Take a look at this Stackoverflow question. It's using btoa() and atob() functions. For server-side JavaScript (Node), you can use Buffers to decode. If y...
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How do I clone a single branch in Git?

I have a local Git repository called 'skeleton' that I use for storing project skeletons. It has a few branches, for different kinds of projects: ...
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Boolean operators && and ||

According to the R language definition , the difference between & and && (correspondingly | and || ) is that the former is vectorized while the latter is not. ...
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Escape angle brackets in a Windows command prompt

I need to echo a string containing angle brackets (< and >) to a file on a Windows machine. Basically what I want to do is the following: echo some string &lt; with angle &gt; brackets &gt;&gt;myfile.txt ...
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Looking for a clear definition of what a “tokenizer”, “parser” and...

I am looking for a clear definition of what a "tokenizer", "parser" and "lexer" are and how they are related to each other (e.g., does a parser use a tokenizer or vice versa)? I need to create a program will go through c/h source files to extract data declaration and definitions. ...
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Can bash show a function's definition?

Is there a way to view a bash function's definition in bash? 4 Answers 4 ...
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How to overload functions in javascript?

... argument overloading in Javascript: Variable arguments - You can pass different sets of arguments (in both type and quantity) and the function will behave in a way that matches the arguments passed to it. Default arguments - You can define a default value for an argument if it is not passed. Name...