Ruby Regular Expression Case Insensitive

In other words your program will be able to tell.

Ruby regular expression case insensitive.

Ruby supports the following modifiers. 47 minutes to read 11. It you want a bookmark here s a direct link to the regex reference tables i encourage you to print the tables so you have a cheat sheet on your desk for quick reference. In the following example we have a serial code with an initial letter that tells us how risky this product is to consume.

Wrap words show invisibles. Regular expressions regex or regexp are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern i e. Ruby case regex. Abc i and inline or embedded e g.

Rubular is a ruby based regular expression editor. I makes the regex match case insensitive. Think about an email address with a ruby regex you can define what a valid email address looks like. The tables below are a reference to basic regex.

While reading the rest of the site when in doubt you can always come back and look here. Constructs a new regular expression from pattern which can be either a string or a regexp in which case that regexp s options are propagated and new options may not be specified a change as of ruby 1 8. O causes any substitutions in a particular regex literal. I abc the most common modifiers are global case insensitive multiline and dotall modifiers.

X tells ruby to ignore whitespace between regex tokens. M makes the dot match newlines. A ruby regular expression editor. A specific sequence of.

Ruby indeed uses m whereas perl and many other programming languages use s for dot matches newlines. Ruby regular expressions ruby regex for short help you find specific patterns inside strings with the intent of extracting data for further processing two common use cases for regular expressions include validation parsing. I case insensitive m make dot match newlines x ignore whitespace in regex o perform substitutions. Regular expression patterns are often used with modifiers also called flags that redefine regex behavior regex modifiers can be regular e g.

Case serial code when ac low risk when al medium risk when ax high risk else unknown risk end when not to use ruby case. Your test string.