英语中表达并列，and前加不加逗号？ - 知乎
Mar 22, 2016 · 这个用在and和or前面、有三者及以上并列时的逗号叫做 serial comma，或者series comma、 Oxford comma 、 Harvard comma。 基本原则 简单来说，加不加这个逗号，主要是习惯 …
在英语中，and符号“&”应该怎么用？ - 知乎
Jul 25, 2017 · “&”这个符号按照以下图片所示一笔手写成。 &是逻辑语言，逻辑上表示两者属于缺一不可的关系，还可以表示一个人和另外一个人之意，与and同义。如A&B，表示A与B,A和B,A*B。 …
Difference between || and ?? operators - Stack Overflow
Mar 31, 2021 · The main difference between ?? and || is how they handle falsy values. ?? only considers null and undefined as nullish, while || considers any falsy value as potentially false. In summary, use …
An "and" operator for an "if" statement in Bash - Stack Overflow
if [ "${STATUS}" != 200 ] && [ "${STRING}" != "${VALUE}" ]; then ... In each of these, ] is the final argument to the invocation of [, as required. The shell parses && and ; as tokens which terminate the …
Difference between == and === in JavaScript - Stack Overflow
Feb 7, 2009 · What is the difference between == and === in JavaScript? I have also seen != and !== operators. Are there more such operators?
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what is the difference between "&" and "and" in Python?
May 22, 2021 · 1 & 1 = 1 3 & 2 = 2 2 & 1 = 0 while and is the boolean operator. You can use & for boolean expression and get correct answer since True is equivalent to 1 and False is 0, 1 & 0 = 0. 0 …
What is the difference between the | and || or operators?
Aug 29, 2008 · I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: |. What is the difference between those two usages? Are there any caveats …
Which equals operator (== vs ===) should be used in JavaScript ...
Dec 11, 2008 · I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing …
python - Difference between using ' and "? - Stack Overflow
Oct 9, 2018 · Possible Duplicates: Difference between the use of double quote and quotes in python Single quotes vs. double quotes in Python So I am now learning python, and was creating a function. …