logical-operators

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Is relying on && short-circuiting safe in .NET?

Assume myObj is null.Is it safe to write this开发者_高级运维? if(myObj != null && myObj.SomeString != null)[详细]

2023-02-07 06:54 分类：问答
When should I use a bitwise operator?

I read the following Stack Overflow questions, and I understand the differences between bitwise and logical.[详细]

2023-02-05 03:26 分类：问答
how to combine the "TRUE FALSE" into "FALSE" using R?

I am using %in% to see if the vector contain what I need, like below: > c(1,2)%in%1:4 [1] TRUE TRUE > c(1,5)%in%1:4[详细]

2023-02-05 01:44 分类：问答
Logical operators in JavaScript — how do you use them?

I don\'t understand how &&, ||, and ! work... both with 开发者_Go百科bools and other data types. How do you use them?All values in JavaScript are either “truthy” or “falsy”.[详细]

2023-02-01 20:00 分类：问答
Why is there no logical xor in JavaScript?

Why开发者_开发问答 is there no logical xor in JavaScript?JavaScript traces its ancestry back to C, and C does not have a logical XOR operator. Mainly because it\'s not useful. Bitwise XOR is extremely[详细]

2023-02-01 14:38 分类：问答
What does this expression do?

Is there any interpretation of this expression in the decimal system? In other words, is it an efficient implementation of calculation using the lo开发者_开发问答gical operation in place of arithmetic[详细]

2023-01-30 21:31 分类：问答
How does javascript logical assignment work?

In javascript, if we have some code such as var a = \"one\"; var b = q || a; alert (b); The logical OR operator will assign a\'s value to b, and the alert will be \"one.\"[详细]

2023-01-30 09:55 分类：问答
syntax error unexpected T_BOOLEAN_OR

I\'m pretty sure its probably ( or ) that is causing it maybe one too many of them. $filechk1 = \"/temp/files/\" . $data[0] . \".doc\";[详细]

2023-01-29 21:54 分类：问答
||(Or) Logical Operator in Java vs .Net [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]

2023-01-28 12:19 分类：问答
Issues with ANDs and ORs (COBOL)

I can\'t seem to get this one part right. I was given a input file with a bunch of names, some of which I need to skip, with extra information on each one. I was trying use ANDs and ORs to skip over t[详细]

2023-01-28 07:43 分类：问答