julia类型转换与格式化示例代码-julia代码-BFW代码库

julia类型转换与格式化示例代码

代码语言：julia

所属分类：其他

代码描述：julia类型转换与格式化示例代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

# strings can be converted using float and int:
e_str1 = "2.718"
e = parse(Float64, e_str1)
println(5e)
#> 13.59
num_15 = parse(Int, "15")
println(3num_15)
#> 45

# numbers can be converted to strings and formatted using printf
using Printf
@printf "e = %0.2f\n" e
#> e = 2.72
# or to create another string sprintf
e_str2 = @sprintf("%0.3f", e)

# to show that the 2 strings are the same
println("e_str1 == e_str2: $(e_str1 == e_str2)")
#> e_str1 == e_str2: true

# available number format characters are f, e, a, g, c, s, p, d:
# (pi is a predefined constant; however, since its type is 
# "MathConst" it has to be converted to a float to be formatted)
@printf "fix trailing precision: %0.3f\n" float(pi)
#> fix trailing precision.........完整代码请登录后点击上方下载按钮下载查看