59 lines
1.3 KiB
Kotlin
59 lines
1.3 KiB
Kotlin
package org.mariotaku.ktextension
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import java.text.NumberFormat
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import java.util.*
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/**
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* Created by mariotaku on 16/7/30.
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*/
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fun String?.toLongOr(def: Long) = try {
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this?.toLong() ?: def
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} catch (e: NumberFormatException) {
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def
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}
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fun String?.toIntOr(def: Int) = try {
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this?.toInt() ?: def
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} catch (e: NumberFormatException) {
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def
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}
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fun String?.toDoubleOr(def: Double) = try {
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this?.toDouble() ?: def
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} catch (e: NumberFormatException) {
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def
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}
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fun Int.coerceInOr(range: ClosedRange<Int>, def: Int): Int {
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if (range.isEmpty()) return def
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return coerceIn(range)
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}
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/**
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* Convenience method checking int flags
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*/
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operator fun Int.contains(i: Int): Boolean = (this and i) == i
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/**
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* Convenience method checking long flags
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*/
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operator fun Long.contains(i: Long): Boolean = (this and i) == i
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fun Number.toLocalizedString(locale: Locale = Locale.getDefault()): String {
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val nf = NumberFormat.getInstance(locale)
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return nf.format(this)
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}
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val Int.nextPowerOf2: Int
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get() {
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var n = this
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if (n <= 0 || n > 1 shl 30) throw IllegalArgumentException("n is invalid: $n")
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n -= 1
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n = n or (n shr 16)
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n = n or (n shr 8)
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n = n or (n shr 4)
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n = n or (n shr 2)
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n = n or (n shr 1)
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return n + 1
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} |