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
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,
In natural languages, we would say \"some color is a primary color if the color is red, blue, or yellow.\"
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
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
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
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.
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
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
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
加载中,请稍侯......