stdlib/string/format_extended_parens.rb

tests/_examples/stdlib/string/format_extended_parens.rb in the metorex repository.

# Format specifier: %i (alias for %d)
puts("%i" % 42)

# Plus sign flag
puts("%+d" % 42)
puts("%+d" % -5)

# Space sign flag
puts("% d" % 42)
puts("% d" % -5)

# Float with plus/space
puts("%+f" % 3.14)
puts("% f" % 3.14)

# Integer from float
puts("%d" % 3.99)

# Float plus sign for int arg
puts("%+d" % 3.5)
puts("% d" % 3.5)

# Hex uppercase
puts("%X" % 255)

# Octal
puts("%o" % 8)

# Binary
puts("%b" % 10)

# Char from int
puts("%c" % 65)

# Char from string
puts("%c" % "hello")

# Inspect nil
puts("%p" % nil)

# Inspect number
puts("%p" % 42)

# String precision
puts("%.3s" % "hello")

# Right-align with width
puts("%10s|" % "right")

# Zero-pad right-align
puts("%010d" % 42)

# Trailing percent at end of format
puts("100%")

Output:

42
+42
-5
 42
-5
+3.140000
 3.140000
3
+3
 3
FF
10
1010
A
h
nil
42
hel
     right|
0000000042
100%