清歌不尽 书童

I use php sessions (not cookies, except for session id cookie) for all user data, and when a user go...

What is the biggest \no-floating\ integer that can be stored in an IEEE 754 double type without losi...

How to set the environment variables for Java in Windows (the classpath)?

I want to compare two floats in PHP, like in this sample code: $a = 0.17; $b = 1 - 0.83; //0.17 if(...

I have a containing DIV, that I use as part of my responsive grid. It expands to the maximum width I...

What is the difference between concurrency and parallelism? Examples are appreciated.

I\'m using the runtime to run command prompt commands from my Java program. However, I\'m not aware ...

Inversion of Control (IoC) can be quite confusing when it is first encountered. What is it? Which ...

I\'ve heard that SELECT * is generally bad practice to use when writing SQL commands because it is m...

I want to combine multiple databases in my system. Most of the time the database is MySQL; but it ma...

I\'m working with boolean index in Pandas. The question is why the statement: a[(a[\'some_column\']...

I start with an array of NFL player names like this: $fullnamearray=array( array(Robbie,Gould), arra...

I am trying to check if web page is loaded completed or not (i.e. checking that all the control is l...

I have defined an object in one component and trying to access it through props in another class com...