设置泛型将参数配置为 null 时抛出了如下异常:
Type 'null' is not assignable to type 'T'. 'T' could be instantiated with an arbitrary type which could be unrelated to 'null'. <ArkTSCheck>
在 null 后面添加 ! 即可,以表示该值不会为 null
data: T = null!
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报错如下：Type '{ navList: any; }' is not assignable to type '...
错误消息：Type "before" is not assignable to type 'OutletPosit...
Type Observable
错误提示：Argument of type 'number' is not assignable to param...
变量报错：Variable is not assignable (missing __block type spe...
plot(x, y = NULL, type = "p", xlim = NULL, ylim = NULL, ...
File path=getExternalFilesDir(type); type可以为: null，//根目录 ...
A nullable type is a value type that can be null. (1)与基础结...
``` if (!intercepted && b !=null) { switch (type) { case ...
etBarCode.setInputType(InputType.TYPE_NULL);
本文标题：Type 'null' is not assignable to
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