C# logic order and compiler behavior?

Question

In C#, (and feel free to answer for other languages), what order does the runtime evaluate a logic statement? Example: DataTable myDt = new DataTable(); if (myDt != null && myDt.Rows.Count > 0) { //do some stuff with myDt } Which statement does the runtime evaluate first - myDt != null or: myDt.Rows.Count > 0 ? Is there a time when the compiler would ever evaluate the statement backwards? Perhaps when an "OR" operator is involved? --- > & is known as a logical bitwise operator and will always evaluate all the sub-expressions What is a good example of when to use the bitwise operator instead of the "short-circuited boolean"?

Answer 1

Per the microsoft documentation, the && is lowest priority ,

while the membership operator (the decimal point) is the highest...

Rather than trying to remember the nooks are crannies, I would recommend using

the parenthesis to ensure they get done the order you want. That way you do

not have to remember all the silly little rules..

if (

(myDt != null) && ( (myDt.Rows.Count) > 0)

)

{

// processes the data table

}