Which is more efficient? checking == or just changing a variable?

Question

Imagine I had a variable called X. Say every 5 seconds, I wanted to make X = true. (it can be true or false between these 5 seconds, but gets reset to true when 5 seconds up).

It would be more efficient to check if the value is already true, and if not, reassign it to true? Or just X = true?

In other words, what will work faster?

if(x==false){
    x = true;
}

against

x = true;

On the one hand, the first program will not mutate a variable if it is not needed. On the other hand, the second program does not need to check that X is equal; he plunges straight.

Answer 1

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Answer 2

:)

x == false 90% , x .

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Answer 3

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Answer 4

/:

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, - ( , ). - x=true, .

, , , , , x=true ( ).

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:

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