what does

Question

Possible Duplicates:
C++ weird usage of conditional operator (>?=)
C extension: <? and >? operators

When i read a C++ code,i see the following lines:

void add(double v) { min <?= v; max >?= v; StatFig::add(v); }

What does the

>?=

means?

Thanks.

Steve, it's actually a GCC extension, and not standard C++, and it's also currently deprecated. Programmers should use std::min and std::max instead, for accessing max and min values. — Andreas Eriksson, Aug 12 '11 at 06:25

score 1 · Answer 1 · edited May 23 '17 at 12:04

1

Answered right here: Link.

As explained by the great answer there which i in no way take credit for, it's a deprecated GCC extension, and in no way standard C++. Avoid.

edited May 23 '17 at 12:04

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answered Aug 12 '11 at 06:26

Andreas Eriksson

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score 0 · Answer 2 · answered Aug 12 '11 at 06:26

There is a list of operators in C++ on wikipedia, but it's not in here, so maybe it's defined elsewhere in the code you read.

My guess would be that's it's an assignement operator that checks if the value is lower/higher than a certain threshold, and if so assigns that threshold to the variable. Or something

In other words, min <?= v might be equivalent to min=((min<v)?min:v), but that's just a guess.

what does

2 Answers2