Ruby Single Line If

But when you want to check for the opposite not true false.

Ruby single line if. Ruby offers conditional structures that are pretty common to modern languages. It is used to denote single line comment in ruby. Multi line comments. In ruby there are two types of comments.

Browse other questions tagged ruby on rails ruby on rails 4 or ask your own question. Here we are going to explain both types of comment with their syntax and example. This makes sense because do end reads badly in a one liner but for multi line blocks leaving a closing hanging on its own line is inconsistent with everything else that uses end in ruby such as module class method definitions def etc and control structures if. I m getting into the habit of using these a lot more consistently so i wanted to share.

I ve touched on this gotcha briefly in the past when discussing the wat video but i thought a few examples of when single line conditionals can bite you would be fun. If today christmaseve puts santa s on his way end shorthand. With an if statement you can check if something is true. Ruby single line comments it is represented by sign.

Its the most easiest typed comments. Notice that we use two equal symbols to mean equality. Here we will explain all the conditional statements and modifiers available in ruby. Do you use these ruby shorthands.

Any definition should be written in a way that is clear and clean for maintenance and readability reasons so if the single line becomes unwieldy or confusing then spread it out. Single line comments. In ruby we can write a conditional containing a single expression that normally takes up three lines. I m trying to write a single line if else statement in a view.

Use do end for multi line blocks. If you don t this right you won t get the expected results. One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same. These shorthands beautifully consolidate three or more lines of code into one readable line of code.

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