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.
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:
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...
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....
When you allow Google Photos to share access with your device’s default gallery app: You give Google Photos permission to share account information, like your email address and Google Photos auto-backup status from your device’s default gallery app. You can access all photos backed up to Google Photos in your device’s default gallery app.
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?
