mirror of
https://github.com/hanzo-fi/numscript.git
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Alessandro ScandoneandGitHub
a804f6edf1
reworked balances representation (both internal and external) so that it handles colors as an ad-hoc field instead of relying of string convetions
67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package utils
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import (
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"fmt"
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"math/big"
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)
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func NonExhaustiveMatchPanic[T any](value any) T {
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panic(fmt.Sprintf("Non exhaustive match (got '%#v')", value))
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}
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func MinBigInt(a *big.Int, b *big.Int) *big.Int {
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var min big.Int
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if a.Cmp(b) == -1 {
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min.Set(a)
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} else {
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min.Set(b)
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}
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return &min
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}
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func MaxBigInt(a *big.Int, b *big.Int) *big.Int {
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var max big.Int
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if a.Cmp(b) == 1 {
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max.Set(a)
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} else {
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max.Set(b)
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}
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return &max
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}
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func NonNeg(a *big.Int) *big.Int {
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return MaxBigInt(a, big.NewInt(0))
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}
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func Filter[T any](slice []T, predicate func(x T) bool) []T {
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var ret []T
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for _, x := range slice {
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if predicate(x) {
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ret = append(ret, x)
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}
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}
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return ret
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}
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func MapGetOrPutDefault[T any](m map[string]T, key string, getDefault func() T) T {
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lookup, ok := m[key]
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if !ok {
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default_ := getDefault()
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m[key] = default_
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return default_
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}
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return lookup
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}
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func NestedMapGetOrPutDefault[T any](m map[string]map[string]T, key1 string, key2 string, getDefault func() T) T {
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m1 := MapGetOrPutDefault(m, key1, func() map[string]T {
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return map[string]T{}
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})
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return MapGetOrPutDefault(m1, key2, getDefault)
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}
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