* Create key-value caches of limited size * @returns {Function(string, Object)} Returns the Object data after storing it on itself with * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) * deleting the oldest entry
()
| 857 | * deleting the oldest entry |
| 858 | */ |
| 859 | function createCache() { |
| 860 | var keys = []; |
| 861 | |
| 862 | function cache( key, value ) { |
| 863 | // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) |
| 864 | if ( keys.push( key + " " ) > Expr.cacheLength ) { |
| 865 | // Only keep the most recent entries |
| 866 | delete cache[ keys.shift() ]; |
| 867 | } |
| 868 | return (cache[ key + " " ] = value); |
| 869 | } |
| 870 | return cache; |
| 871 | } |
| 872 | |
| 873 | /** |
| 874 | * Mark a function for special use by Sizzle |