Mercurial > gemma
view pkg/imports/misc.go @ 3733:ec86a7155377 concave-hull
Estimated too large triangles as triangles which have an edge which is at least 3.5 times as long as the standard dev of the longest egde per inner triangle.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 24 Jun 2019 11:39:09 +0200 |
parents | a996f2ca9fa5 |
children | f464cbcdf2f2 |
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// SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package imports import ( "context" "database/sql" "fmt" "strings" ) type stringCounter map[string]int func (sc stringCounter) String() string { var b strings.Builder for t, c := range sc { if b.Len() > 0 { b.WriteString(", ") } b.WriteString(fmt.Sprintf("%s: %d", t, c)) } return b.String() } func Savepoint( ctx context.Context, tx *sql.Tx, name string, ) func(func() error) error { var ( savepoint = "SAVEPOINT " + name rollback = "ROLLBACK TO SAVEPOINT " + name release = "RELEASE SAVEPOINT " + name ) return func(fn func() error) (err error) { if _, err = tx.ExecContext(ctx, savepoint); err != nil { return } var done bool defer func() { if !done { _, err2 := tx.ExecContext(ctx, rollback) if err == nil { err = err2 } } }() err = fn() if err == nil { done = true _, err = tx.ExecContext(ctx, release) } return } }