50 lines
988 B
Go
50 lines
988 B
Go
package template_functions
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import (
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"errors"
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"strconv"
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"time"
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)
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func For(start, end int) <-chan int {
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c := make(chan int)
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go func() {
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for i := start; i <= end; i++ {
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c <- i
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}
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close(c)
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}()
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return c
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}
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func Price(price int) string {
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amount := strconv.Itoa(price)
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for len(amount) < 3 {
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amount = "0" + amount
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}
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amount = amount[:len(amount)-2] + "." + amount[len(amount)-2:]
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return amount
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}
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func Now() time.Time {
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return time.Now()
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}
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func Add(x, y int) int {
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return x + y
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}
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func Dict(values ...interface{}) (map[string]interface{}, error) {
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if len(values)%2 != 0 {
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return nil, errors.New("invalid dict call")
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}
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dict := make(map[string]interface{}, len(values)/2)
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for i := 0; i < len(values); i += 2 {
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key, ok := values[i].(string)
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if !ok {
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return nil, errors.New("dict keys must be strings")
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}
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dict[key] = values[i+1]
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}
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return dict, nil
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}
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var FunctionMap = map[string]interface{}{"For": For, "Price": Price, "Now": Now, "Add": Add, "Dict": Dict}
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