FormatterKit 收集了一系列精心設計的 NSFormatter 子類，例如信息單元，距離和相對時間間隔。每一個?formatter 從他們各自領域的復雜商業(yè)邏輯中抽離出來，所以你可以專注用于你的應用程序。

示例代碼：

TTTTimeIntervalFormatter?*timeIntervalFormatter?=?[[TTTTimeIntervalFormatter?alloc]?init];
[timeIntervalFormatter?stringForTimeInterval:0];?//?"just?now"
[timeIntervalFormatter?stringForTimeInterval:-100];?//?"1?minute?ago"
[timeIntervalFormatter?stringForTimeInterval:-8000];?//?"2?hours?ago"

//?Turn?idiomatic?deictic?expressions?on?/?off
[timeIntervalFormatter?stringForTimeInterval:-100000];?//?"1?day?ago"
[timeIntervalFormatter?setUsesIdiomaticDeicticExpressions:YES];
[timeIntervalFormatter?stringForTimeInterval:-100000];?//?"yesterday"

//?Customize?the?present?tense?deictic?expression?for
[timeIntervalFormatter?setPresentDeicticExpression:@"seconds?ago"];
[timeIntervalFormatter?stringForTimeInterval:0];?//?"seconds?ago"

//?Expand?the?time?interval?for?present?tense
[timeIntervalFormatter?stringForTimeInterval:-3];?//?"3?seconds?ago"
[timeIntervalFormatter?setPresentTimeIntervalMargin:10];
[timeIntervalFormatter?stringForTimeInterval:-3];?//?"seconds?ago"