a geicko-2 based round robin ranking system designed to test c++ battleship submissions battleship.dunkirk.sh
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1// Copyright 2022 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5package slog 6 7import ( 8 "fmt" 9 "time" 10) 11 12// An Attr is a key-value pair. 13type Attr struct { 14 Key string 15 Value Value 16} 17 18// String returns an Attr for a string value. 19func String(key, value string) Attr { 20 return Attr{key, StringValue(value)} 21} 22 23// Int64 returns an Attr for an int64. 24func Int64(key string, value int64) Attr { 25 return Attr{key, Int64Value(value)} 26} 27 28// Int converts an int to an int64 and returns 29// an Attr with that value. 30func Int(key string, value int) Attr { 31 return Int64(key, int64(value)) 32} 33 34// Uint64 returns an Attr for a uint64. 35func Uint64(key string, v uint64) Attr { 36 return Attr{key, Uint64Value(v)} 37} 38 39// Float64 returns an Attr for a floating-point number. 40func Float64(key string, v float64) Attr { 41 return Attr{key, Float64Value(v)} 42} 43 44// Bool returns an Attr for a bool. 45func Bool(key string, v bool) Attr { 46 return Attr{key, BoolValue(v)} 47} 48 49// Time returns an Attr for a time.Time. 50// It discards the monotonic portion. 51func Time(key string, v time.Time) Attr { 52 return Attr{key, TimeValue(v)} 53} 54 55// Duration returns an Attr for a time.Duration. 56func Duration(key string, v time.Duration) Attr { 57 return Attr{key, DurationValue(v)} 58} 59 60// Group returns an Attr for a Group Value. 61// The first argument is the key; the remaining arguments 62// are converted to Attrs as in [Logger.Log]. 63// 64// Use Group to collect several key-value pairs under a single 65// key on a log line, or as the result of LogValue 66// in order to log a single value as multiple Attrs. 67func Group(key string, args ...any) Attr { 68 return Attr{key, GroupValue(argsToAttrSlice(args)...)} 69} 70 71func argsToAttrSlice(args []any) []Attr { 72 var ( 73 attr Attr 74 attrs []Attr 75 ) 76 for len(args) > 0 { 77 attr, args = argsToAttr(args) 78 attrs = append(attrs, attr) 79 } 80 return attrs 81} 82 83// Any returns an Attr for the supplied value. 84// See [Value.AnyValue] for how values are treated. 85func Any(key string, value any) Attr { 86 return Attr{key, AnyValue(value)} 87} 88 89// Equal reports whether a and b have equal keys and values. 90func (a Attr) Equal(b Attr) bool { 91 return a.Key == b.Key && a.Value.Equal(b.Value) 92} 93 94func (a Attr) String() string { 95 return fmt.Sprintf("%s=%s", a.Key, a.Value) 96} 97 98// isEmpty reports whether a has an empty key and a nil value. 99// That can be written as Attr{} or Any("", nil). 100func (a Attr) isEmpty() bool { 101 return a.Key == "" && a.Value.num == 0 && a.Value.any == nil 102}