40 lines
1 KiB
Dart
40 lines
1 KiB
Dart
extension StringExtensions on String {
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String substringAfter(String pattern) {
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final startIndex = indexOf(pattern);
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if (startIndex == -1) return substring(0);
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final start = startIndex + pattern.length;
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return substring(start);
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}
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String substringBefore(String pattern) {
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final endIndex = indexOf(pattern);
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if (endIndex == -1) return substring(0);
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return substring(0, endIndex);
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}
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String substringBeforeLast(String pattern) {
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final endIndex = lastIndexOf(pattern);
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if (endIndex == -1) return substring(0);
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return substring(0, endIndex);
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}
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String substringBetween(String left, String right) {
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int startIndex = 0;
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int index = indexOf(left, startIndex);
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if (index == -1) return "";
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int leftIndex = index + left.length;
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int rightIndex = indexOf(right, leftIndex);
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if (rightIndex == -1) return "";
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startIndex = rightIndex + right.length;
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return substring(leftIndex, rightIndex);
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}
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}
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extension LetExtension<T> on T {
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R let<R>(R Function(T) block) {
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return block(this);
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}
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}
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