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Lightning fast commenting (in and out)

·123 words·1 min
Alejandro Duarte
Alejandro Duarte
Alejandro Duarte is a Software Engineer, published author, and award winner. He currently works for MariaDB plc as a Developer Relations Engineer. Starting his coding journey at 13 with BASIC on a rudimentary black screen, Alejandro quickly transitioned to C, C++, and Java during his academic years at the National University of Colombia. Relocating first to the UK and then to Finland, Alejandro deepened his involvement in the open-source community. He’s a recognized figure in Java circles, credited with articles and videos amassing millions of views, and presentations at international events.

I have used this two or three times in my life but it’s one of those simple (and useful?) hard to forget tricks. It could be useful during tough debugging times.

If you have several lines of code and you want to comment them out, you can use standard multi-line comments (this is for C++, Java, and others):

Component contentArea = getContentArea();
layout.setExpandRatio(contentArea, 1);

Notice that you can also “comment out” the first and last lines using single-line comments:

Component contentArea = getContentArea();
layout.setExpandRatio(contentArea, 1);

Now you can comment in and out your code just by removing or typing the first “/”:

CAUTION: Avoid usage in programmers with chronic lava flow disease, including junior and senior developers.


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