README
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fmtx
Package fmtx contains formatting utilities.
It means to be a complement to the standard fmt package.
Documentation
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Overview ¶
Package fmtx contains formatting utilities. It means to be a complement to the standard fmt package.
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func CondSprintf ¶
CondSprintf is like fmt.Sprintf(), but extra arguments (that have no verb in the format string) are ignored (not treated as an error).
Usually mismatching format string and arguments is an indication of a bug in your code (in how you call fmt.Sprintf()), so you should not overuse this.
For details, see https://stackoverflow.com/a/59696492/1705598
Example ¶
ExampleFormatInt shows how to use the CondSprintf() function.
fmt.Println(CondSprintf("Foo%s", "bar", "baz"))
fmt.Println(CondSprintf("%d + %d = %d", 1, 2, 3, "extra", 4))
Output: Foobar 1 + 2 = 3
func FormatInt ¶
FormatInt formats an integer with grouping decimals, in decimal radix. Grouping signs are inserted after every groupSize digits, starting from the right. A groupingSize less than 1 will default to 3. Only ASCII grouping decimal signs are supported which may be provided with grouping.
For details, see https://stackoverflow.com/a/31046325/1705598
Example ¶
ExampleFormatInt shows how to use the FormatInt() function.
fmt.Println("groupSize: 3 4")
fmt.Println("---------------------------------------------")
for _, v := range []int64{12, 123, 1234, 123456789} {
for sign := int64(1); sign >= -1; sign -= 2 {
x := v * sign
fmt.Printf("n: %10s", fmt.Sprint(x))
for groupingSize := 3; groupingSize <= 4; groupingSize++ {
fmt.Printf(" =%14s", FormatInt(x, groupingSize, ','))
}
fmt.Println()
}
}
Output: groupSize: 3 4 --------------------------------------------- n: 12 = 12 = 12 n: -12 = -12 = -12 n: 123 = 123 = 123 n: -123 = -123 = -123 n: 1234 = 1,234 = 1234 n: -1234 = -1,234 = -1234 n: 123456789 = 123,456,789 = 1,2345,6789 n: -123456789 = -123,456,789 = -1,2345,6789
func FormatSize ¶
FormatSize formats the given size value using the given size unit, rounding to the given number of fraction digits. Fraction digits are omitted when the (resulting) unit is SizeUnitByte.
If SizeUnitAuto is specified, the unit will be automatically selected based on the size value.
Behavior for negative size values is undefined.
Types ¶
type SizeUnit ¶
type SizeUnit string
SizeUnit is the type of the unit sizes
const ( // SizeUnitAuto indicates that another unit is to be chosen automatically // based on the size value SizeUnitAuto SizeUnit = "(auto)" // SizeUnitByte is the byte unit size SizeUnitByte SizeUnit = "bytes" // SizeUnitKB is the kilobyte (2^10 bytes) unit size SizeUnitKB SizeUnit = "KB" // SizeUnitMB is the megabyte (2^20 bytes) unit size SizeUnitMB SizeUnit = "MB" // SizeUnitGB is the gigabyte (2^30 bytes) unit size SizeUnitGB SizeUnit = "GB" // SizeUnitTB is the terabyte (2^40 bytes) unit size SizeUnitTB SizeUnit = "TB" // SizeUnitPB is the petabyte (2^50 bytes) unit size SizeUnitPB SizeUnit = "PB" // SizeUnitEB is the exabyte (2^60 bytes) unit size SizeUnitEB SizeUnit = "EB" )
Source Files