Questions tagged [local-variable]

A variable whose scope is contained to a smaller unit of code such as a function or class.

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Is a class with a high number of member variables bad and is there a design structure for data processing?

Context: Java, fairly new developer I have inherited code from a friend for a project that processes variables. The first thing i notice is the class has a ton of member variables. I have always been ...
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Does "variables should live in the smallest scope as possible" include the case "variables should not exist if possible"?

According to the accepted answer on "Rationale to prefer local variables over instance variables?", variables should live in the smallest scope possible. Simplify the problem into my interpretation, ...
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2answers
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Is there any consequences to write for(float i=0, myFloatVar=0; i < n; i++)?

For example, sometimes I need a float variable to be used inside a for loop, e.g.: float sum=0; for(int i = 0; i < students.length; i++) { sum += Math.random(); students[i].result = sum; } ...