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[dart/en] Updated example14 (#3881)

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Kir Malev 2024-05-16 07:25:14 +04:00 committed by GitHub
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commit ef5bdf1c52
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1 changed files with 8 additions and 8 deletions
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@ -312,15 +312,15 @@ example14() {
if (a) { if (a) {
print("true, a is $a"); print("true, a is $a");
} }
a = null; a = false;
if (a) { if (a) {
print("true, a is $a"); print("true, a is $a");
} else { } else {
print("false, a is $a"); /// runs here print("false, a is $a"); /// runs here
} }
/// dynamic typed null can be convert to bool /// dynamic typed null can not be convert to bool
var b;/// b is dynamic type var b; /// b is dynamic type
b = "abc"; b = "abc";
try { try {
if (b) { if (b) {
@ -332,16 +332,16 @@ example14() {
print("error, b is $b"); /// this could be run but got error print("error, b is $b"); /// this could be run but got error
} }
b = null; b = null;
if (b) { if (b) { /// Failed assertion: boolean expression must not be null)
print("true, b is $b"); print("true, b is $b");
} else { } else {
print("false, b is $b"); /// runs here print("false, b is $b");
} }
/// statically typed null can not be convert to bool /// statically typed null can not be convert to bool
var c = "abc"; var c = "abc";
c = null; c = null;
/// complie failed /// compilation failed
/// if (c) { /// if (c) {
/// print("true, c is $c"); /// print("true, c is $c");
/// } else { /// } else {