Hi, I was wondering, is there something shorter fo...

# announcements

[Fré Dumazy]

Hi, I was wondering, is there something shorter for CharSequence.takeIf { it.isNotBlank() }?.let { doSomethingWithThis(it) } to execute code only if a String or CharSequence is not null or blank?

[nil2l]

CharSequence.run { if (isNotBlank()) doSomethingWithThis(this) }

[Fré Dumazy]

Perhaps, but I was looking for something less verbose. I had to change to String instead of CharSequence. Eventually I think i'll write an extension function:
inline fun String.useNotBlank(block: (String) -> Unit): Boolean {
return this.takeIf { it.isNotBlank() }?.let(block) != null
}

[genovich]

CharSequence?.takeIf(CharSequence::isNotBlank)?.let { doSomethingWithThis(it) }

[Fré Dumazy]

then I can just use "my text".useNotBlank { doSomethingWithThis(it) }

[genovich]

You can create your own extension method

[Fré Dumazy]

Thanks, I'll do that!

[genovich]

fun CharSequence?.useNotBlank(block: (CharSequence) -> Unit): CharSequence? =
        this?.takeIf(CharSequence::isNotBlank)?.also(block)

[genovich]

@Fré Dumazy

[elect]

fun CharSequence?.doSomethingIfValid() {
   if(this != null && this.isNotBlank())
      doSomethingWithThis(this)
}

CharSequence.doSomethingIfValid()