boolean-operations

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Basic boolean minimization

I am trying to simplify the following piece of boolean algebra so I can construct the circuit : A\'.B\'.C.D+A\'.B.C.D\'+A\'.B.C.D+A.B\'.C\'.D +A.B\'.C.D+A.B.C\'.D+A.B.C.D\' + A.B.C.D[详细]

2023-01-19 20:47 分类：问答
Using 'or die()' to stop on errors in PHP

Often in PHP, I see: $result = mysql_query($query) or die(); Coming from python, I know why 开发者_开发知识库this should work, because or returns the first value if it is true in a boolean context,[详细]

2023-01-08 00:36 分类：问答
Why do most programming languages only have binary equality comparison operators?

In natural languages, we would say \"some color is a primary color if the color is red, blue, or yellow.\"[详细]

2023-01-06 16:04 分类：问答
How to avoid notice in php when one of the conditions is not true

I\'ve notice that when one of the two conditions in a php if statement is not true. You get an undefined index notice for the statement that is not true. And the result in my case is a distorted web p[详细]

2022-12-31 18:35 分类：问答
OR, AND Operator

Newbie question. How to calculate the value of the formula A f B, where f - the bi开发者_JAVA技巧nary function OR or AND?There is a distinction between the conditional operators && and || and[详细]

2022-12-31 02:06 分类：问答
Variables combined with && and ||

What do the last lines mean? a=0; b=0; c=0; a && b++; c || b--; Can you vary t开发者_StackOverflow中文版his question to explain with more interesting example?For the example you gave: if a[详细]

2022-12-29 02:36 分类：问答
Is it faster to use a complicated boolean to limit a ResultSet at the MySQL end or at the Java end?

Lets say I have a really big table filled with lots of data (say, enough not to fit comfortably in memory), and I want to analyze a subset of the rows.[详细]

2022-12-28 14:54 分类：问答
Why doesn't c++ have &&= or ||= for booleans?

Is there a "very bad thing" that can happen &am开发者_如何学Pythonp;&= and ||= were used as syntactic sugar for bool foo = foo && bar and bool foo = foo || bar?A bool may only be[详细]

2022-12-23 12:01 分类：问答
De Morgan's rules explained

Could you please explain the De Morgan\'s rules as simply as possible (e.g.开发者_开发问答 to someone with only a secondary school mathematics background)?Overview of boolean algebra[详细]

2022-12-18 09:01 分类：问答
Compute union of two arbitrary shapes

I\'m working on an application, I need to be able to combine two overlapping arbitrary shapes as drawn by the user. This would be a Union operatio开发者_如何转开发n on the two shapes. The resultant sh[详细]

2022-12-18 07:25 分类：问答