The empty default constructor like Widget() {}; is seen as a user defined default constructor, while Widget() = default; is not. This leads to default initialization in the former case, while value initialization in the latter, in definitions involving the form Widget w = new Widget(), Widget w{} etc.
Default value of MyObject. See default Keyword in Generic Code (C# Programming Guide) (MSDN): In generic classes and methods, one issue that arises is how to assign a default value to a parameterized type T when you do not know the following in advance: Whether T will be a reference type or a value type. If T is a value type, whether it will be a numeric value or a struct. Given a variable t ...
FOO="${VARIABLE:-default}" # FOO will be assigned 'default' value if VARIABLE not set or null. # The value of VARIABLE remains untouched. To do the same, as well as assign default to VARIABLE:
- name: Create default user: name: "default_name" when: my_variable is not defined - name: Create custom user: name: "{{my_variable}}" when: my_variable is defined But as I mentioned, there's a lot of optional variables and this creates a lot of possibilities. Is there something like the code above?
The question is: since a default value is specified, is it necessary to also specify that the column should not accept NULL s? In other words, doesn't DEFAULT render NOT NULL redundant?
Is it possible to set default values for some struct member? I tried the following but, it'd cause syntax error: typedef struct { int flag = 3; } MyStruct; Errors: $ gcc -o testIt test.c test....
What is the difference in TypeScript between export and default export? In all the tutorials, I see people exporting their classes and I cannot compile my code if I don't add the default keyword be...
