Strings can be formed in ruby using
single quotes or
double quotes. But ruby treats string with double quotes
Any characters such as number or alphabets or symbols enclosed within quotes are
We've already learnt about adding newline character to a string. Likewise, other characters can also be embedded in strings.
name = “Bharath\tKumar”
For creating strings, this is an added advantage of using double quotes over single quotes. If you use double quotes, you could use single quote as
apostrophe in the string.
str = “Bharath’s”
\which acts as the escape character, hence telling the compiler/interpreter that the next character has some special meaning, as in case of
\n. In other cases, like for apostrophe, the backslash
\tells the compiler/interpreter that the following character has no special meaning and that the following character is to be part of the string.
str = 'Bharath\'s'
\' inside double quotation to include apostrophe in string.
In the below image, when using single quote inside single quotes you can see that we aren't able quit the interactive mode. So, it's not advisable.
To create a multiline string and store it in a variable
HERE keyword is used.
This begins with a two less than symbols
<< and the keyword HERE indicates that, until you see the keyword HERE again, store all the values in the variable.
quote = << HERE What you do today can improve all your tomorrows HERE
So, the value
What you do\ntoday can\nimprove\nall your\ntomorrows is stored in the variable
quote. This is the easiest way to store large fragments of text in the variable.
Split is a useful method for taking the string and splitting into parts. Its syntax is :
Where, the delimiter is the point from where the Stirng specified will be split into two.
first,last = "Bharath,Kumar".split(/,/)
comma (,) is the delimiter. We use
slashes (/) to delimit(escape) the delimiters.
When this statement is executed, the piece of text before comma is assigned to the variable first and the piece of text after comma is assigned to the variable last.
Therefore in the picture above, value
Bharath is assigned to the variable
first and value
Kumar is assigned to the variable
Squeeze is used to remove trailing spaces from the string. Following is the syntax for it :
In the above image, you could note the number of spaces in the variable first. When printing the first variable using squeeze method it removes the trailing spaces.