README
¶
gosexy/to
Convenient functions for converting values between common Go datatypes. For Go 1.1+.
This package ignores errors and allows quick-and-dirty conversions between Go datatypes. When any conversion seems unreasonable a zero value is used as fallback.
If you're not working with human provided data, fuzzy input or if you'd rather not ignore any error in your program, you should better use the standard Go packages for conversion, such as strconv, fmt or even standard conversion they may be better suited for the task.
Installation
go get -u menteslibres.net/gosexy/to
Usage
Import the package
import "menteslibres.net/gosexy/to"
Use the available to functions to convert a float64 into a string:
// "1.23"
s := to.String(1.23)
Or a bool into string:
// "true"
s := to.String(true)
What about the other way around? string to float64 and string to bool.
// 1.23
f := to.Float64("1.23")
// true
b := to.Bool("true")
Note that this package only provides to.Uint64(), to.Int64() and
to.Float64() but no to.Uint8(), to.Uint() or to.Float32() functions, if
you'd like to produce a float32 instead of a float64 you'd first use
to.Float64() and then cast the output using float32().
f32 := float32(to.Float64("12.34"))
There is another important function, to.Convert() that accepts any value
(interface{}) as first argument and also a reflect.Kind, as second, that
defines the data type the first argument will be converted to, this is also
the only function that returns an error value.
val, err := to.Convert("12345", reflect.Int64)
Date formats and durations are also handled, you can use many fuzzy date formats
and they would be converted into time.Time values.
timeVal = to.Time("2012-03-24")
timeVal = to.Time("Mar 24, 2012")
durationVal := to.Duration("12s37ms")
Now, an important question: how fast is this library compared to standard
methods, like the fmt or strconv packages?
It is, of course, a little slower that strconv methods but it is faster than
fmt, so it provides an acceptable speed for most projects. You can test it by
yourself:
$ go test -test.bench=.
PASS
BenchmarkFmtIntToString 5000000 547 ns/op
BenchmarkFmtFloatToString 2000000 914 ns/op
BenchmarkStrconvIntToString 10000000 142 ns/op
BenchmarkStrconvFloatToString 1000000 1155 ns/op
BenchmarkIntToString 10000000 325 ns/op
BenchmarkFloatToString 2000000 873 ns/op
BenchmarkIntToBytes 10000000 198 ns/op
BenchmarkBoolToString 50000000 48.0 ns/op
BenchmarkFloatToBytes 2000000 773 ns/op
BenchmarkIntToBool 5000000 403 ns/op
BenchmarkStringToTime 1000000 1063 ns/op
BenchmarkConvert 10000000 199 ns/op
ok menteslibres.net/gosexy/to 27.670s
See the docs for a full reference of all the available to methods.
License
This is Open Source released under the terms of the MIT License:
Copyright (c) 2013-2014 José Carlos Nieto, https://menteslibres.net/xiam
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Documentation
¶
Overview ¶
A helper package for converting between datatypes.
If a certain value can not be directly converted to another, the zero value of the destination type is returned instead.
Index ¶
- Constants
- func Bool(value interface{}) bool
- func Bytes(val interface{}) []byte
- func Convert(value interface{}, t reflect.Kind) (interface{}, error)
- func Duration(val interface{}) time.Duration
- func Float64(val interface{}) float64
- func Int64(val interface{}) int64
- func String(val interface{}) string
- func Time(val interface{}) time.Time
- func Uint64(val interface{}) uint64
Constants ¶
const ( KindTime reflect.Kind = iota + 1000000000 KindDuration )
Variables ¶
This section is empty.
Functions ¶
func Bool ¶
func Bool(value interface{}) bool
Tries to convert the argument into a bool. Returns false if any error occurs.
func Bytes ¶
func Bytes(val interface{}) []byte
Tries to convert the argument into a []byte array. Returns []byte{} if any error occurs.
func Duration ¶
Tries to convert the argument into a time.Duration value. Returns time.Duration(0) if any error occurs.
func Float64 ¶
func Float64(val interface{}) float64
Tries to convert the argument into a float64. Returns float64(0.0) if any error occurs.
func Int64 ¶
func Int64(val interface{}) int64
Tries to convert the argument into an int64. Returns int64(0) if any error occurs.
func String ¶
func String(val interface{}) string
Tries to convert the argument into a string. Returns "" if any error occurs.
Types ¶
This section is empty.
Source Files