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Reflection/List properties: Difference between revisions
Scala contribution added.
Walterpachl (talk | contribs) m (→{{header|REXX}}: remove 2 "'") |
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p Foo.class_variables #=> [:@@xyz, :@@abc]</lang>
=={{header|Scala}}==
===Java Interoperability===
{{Out}}Best seen running in your browser [https://scastie.scala-lang.org/PYo43XQwT4atvLtzNfvY3g Scastie (remote JVM)].
<lang Scala>object ListProperties extends App {
private val obj = new {
val examplePublicField: Int = 42
private val examplePrivateField: Boolean = true
}
private val clazz = obj.getClass
println("All public methods (including inherited):")
clazz.getFields.foreach(f => println(s"${f}\t${f.get(obj)}"))
println("\nAll declared fields (excluding inherited):")
clazz.getDeclaredFields.foreach(f => println(s"${f}}"))
}</lang>▼
=={{header|Tcl}}==
Tcl objects do not have properties exactly (externally visible variables), though a common idiom pioneered by <b>Tk</b> is <i>options</i> exposed by the <tt>configure</tt> and <tt>cget</tt> commands.
For objects supporting this protocol, you can list all options by invoking the <tt>configure</tt> method without arguments (result split over multiple lines for readability):
<lang Tcl>% package require Tk
8.6.5
Line 579 ⟶ 594:
<lang Tcl>% lmap o [. configure] {if {[llength $o] == 2} continue else {lindex $o 0}}
-borderwidth -class -menu -relief -screen -use -background -colormap -container -cursor -height
-highlightbackground -highlightcolor -highlightthickness -padx -pady -takefocus -visual -width</lang>
▲</lang>
=={{header|zkl}}==
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