comparison-operators

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Ternary Comparison Operator in Stata?

In my Stata do scripts, I often have to compare dates which may be missing. Unfortunately, 开发者_开发技巧the internal representation of . is the largest possible number of the given range, so the fol[详细]

2023-03-10 18:05 分类：问答
Detecting negative numbers

I was wondering if there is any way to detect if a number is negative in PHP? I have the following code:[详细]

2023-03-08 06:36 分类：问答
Why is 'True == not False' a SyntaxError?

Comparing boolean values with == works in Python. But when I apply the boolean not operator, the result is a syntax error:[详细]

2023-03-07 16:32 分类：问答
No == operator found while comparing structs in C++

Comparing two instances of the follow开发者_运维问答ing struct, I receive an error: struct MyStruct1 {[详细]

2023-02-28 07:17 分类：问答
Is JavaScript's double equals (==) always symmetric?

There are many cases in which JavaScript\'s type-coercing equality operator is not transitive. For example, see \"JavaScript equality tran开发者_运维问答sitivity is weird.\"[详细]

2023-02-25 03:03 分类：问答
SQLite tuples equality comparison

With PostgreSQL and MySQL it is all right to do something like SELECT * FROM mytable WHERE (column1, column2) = (\'value1\', \'value2\'开发者_开发技巧);[详细]

2023-02-22 01:45 分类：问答
JavaScript equality transitivity is weird

I\'ve been reading Douglas Crockford\'s JavaScript: The Good Parts,开发者_高级运维 and I came across this weird example that doesn\'t make sense to me:[详细]

2023-02-19 20:02 分类：问答
Issue with using shared_ptr with custom equality operator and STL

There seems to be an issue when using shared pointers together with a custom equality operator and an std::list.[详细]

2023-02-18 01:24 分类：问答
Difference between == and === in JS [duplicate]

This question already has answers here: Closed 11 years ago. Possibl开发者_如何学JAVAe Duplicates:[详细]

2023-02-17 07:20 分类：问答
I cannot compare two strings in PHP

<?php $gender = \"devilcode\"; if (($gender == \"female\") || ($gender = \"male\")) { echo \"ok\"; } else echo开发者_运维技巧 \"no\";[详细]

2023-02-16 09:13 分类：问答