You should know the Ruby Code style _ruby topic

One, Space and tab
Indent with spaces (95.364%)
Use tab indent (4.636%)
Based on 1,001,987 submissions
Second, maximum line width
80 characters (92.618%)
120 characters (5.893%)
150 characters (1.489%)
Based on 1,057,374 submissions
Three, operator, colon, curly braces around, comma, semicolon after the use of space
Do not use spaces (73.366%)

Copy Code code as follows:

sum = 1 +2
A,b = 1, 2
1>2? True:false;puts ' Hi '
[1, 2, 3].each {|e| puts E}

Use spaces (26.634%)

Copy Code code as follows:

sum = 1 + 2
A, B = 1, 2
1 > 2? True:false; Puts ' Hi '
[1, 2, 3].each {|e| puts E}

Based on 911,301 submissions
Four, default parameters
Front and back spaces (59.151%)

Copy Code code as follows:

def some_method (arg1 =:d efault, arg2 = nil, arg3 = [])
# do something ...
End

No spaces or only one space (40.849%)

Copy Code code as follows:

def some_method (arg1=:d efault, Arg2=nil, arg3=[])
# do something ...
End

Based on 19,213 submissions
Five, long numbers
Do not use underline (97.984%)

Copy Code code as follows:

num = 1000000

Use underline (2.016%)

Copy Code code as follows:

num = 1_000_000

Based on 133,530 submissions
whether to omit parentheses when there is no argument
Ellipsis brackets (98.556%)

Copy Code code as follows:

def Some_method
# do something ...
End

Do not omit parentheses (1.444%)

Copy Code code as follows:

def Some_method ()
# do something ...
End

Based on 267,404 submissions
Whether to use parentheses around parameters when defining functions
Omitted (62.867%)

Copy Code code as follows:

def Some_method Arg1, arg2
# do something ...
End

Not omitted (37.133%)

Copy Code code as follows:

def some_method (Arg1, arg2)
# do something ...
End

Based on 365,121 submissions