fmt软件包 的
文档中 提供了“动词”格式的列表：
一般：
%v the value in a default format. when printing structs, the plus flag (%+v) adds field names%#v a Go-syntax representation of the value%T a Go-syntax representation of the type of the value%% a literal percent sign; consumes no value
布尔值：
%t the word true or false
整数：
%b base 2%c the character represented by the corresponding Unipre pre point%d base 10%o base 8%q a single-quoted character literal safely escaped with Go syntax.%x base 16, with lower-case letters for a-f%X base 16, with upper-case letters for A-F%U Unipre format: U+1234; same as "U+%04X"
浮点和复杂成分：
%b decimalless scientific notation with exponent a power of two, in the manner of strconv.FormatFloat with the 'b' format, e.g. -123456p-78%e scientific notation, e.g. -1234.456e+78%E scientific notation, e.g. -1234.456E+78%f decimal point but no exponent, e.g. 123.456%g whichever of %e or %f produces more compact output%G whichever of %E or %f produces more compact output
字符串和字节片：
%s the uninterpreted bytes of the string or slice%q a double-quoted string safely escaped with Go syntax%x base 16, lower-case, two characters per byte%X base 16, upper-case, two characters per byte
指针：
%p base 16 notation, with leading 0x
其他标志：
+ always print a sign for numeric values; guarantee ASCII-only output for %q (%+q)- pad with spaces on the right rather than the left (left-justify the field)# alternate format: add leading 0 for octal (%#o), 0x for hex (%#x); 0X for hex (%#X); suppress 0x for %p (%#p); print a raw (backquoted) string if possible for %q (%#q); write e.g. U+0078 'x' if the character is printable for %U (%#U).' ' (space) leave a space for elided sign in numbers (% d); put spaces between bytes printing strings or slices in hex (% x, % X)0 pad with leading zeros rather than spaces
