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Is it possible to make the -init method private in Objective-C?
... reason:@"-init is not a valid initializer for the class Foo"
userInfo:nil];
return nil;
}
The other alternative — which is probably far better in practice — is to make -init do something sensible for your class if at all possible.
If you...
How to set warning level in CMake?
... ENABLE conversion
TREAT_AS_ERRORS ALL
)
set_target_properties(
foo
PROPERTIES
${target_properties}
COMPILE_OPTIONS
"${target_compile_options}"
)
Result for Xcode:
Set CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION Xcode attribute
(aka build settings -> warnings -> su...
How to replace an entire line in a text file by line number
...lacement-line is not fixed, e.g. it's a variable, like this: sed -i "Ns/.*/foo=$myVar" file.txt.
– gsamaras
Jan 30 '19 at 14:53
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show 6 mor...
Can overridden methods differ in return type?
... is super simple: when you have "client" code that calls some method:
int foo = someBar.bar();
then the above has to work (and return something that is an int no matter which implementation of bar() is invoked).
Meaning: if there is a Bar subclass that overrides bar() then you still have to retu...
How to create abstract properties in python abstract classes
...raises the correct exception:
Traceback (most recent call last):
File "foo.py", line 36, in
b1 = Base_1('abc')
TypeError: Can't instantiate abstract class Base_1 with abstract methods name
share
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...
Java Naming Convention with Acronyms [closed]
...orks better than getDVDPlayer(), for example, when used with JSP EL (e.g., foo.dvdPlayer). And if you're naming your getters with lowercase in the acronyms, it's best to keep your class names the same for consistency and predictability.
– daiscog
Feb 22 '18 at...
Magic number in boost::hash_combine
...it when number theory suddenly gets useful :)
– Fred Foo
Feb 9 '11 at 21:28
8
@larsmans I love yo...
What is the difference between 'my' and 'our' in Perl?
...just like my variables. You can see that in the following program: package Foo; our $x = 123; package Bar; say $x;. If you want to "declare" a package variable, you need to use use vars qw( $x );. our $x; declares a lexically-scoped variable that is aliased to the same-named variable in the package ...
Programmatically change log level in Log4j2
...logging.log4j.core.config.Configurator;
Configurator.setLevel("com.example.Foo", Level.DEBUG);
// You can also set the root logger:
Configurator.setRootLevel(Level.DEBUG);
Source
EDITED to reflect changes in the API introduced in Log4j2 version 2.0.2
If you wish to change the root logger level,...
throw Error('msg') vs throw new Error('msg')
...
@pimvdb: true, I've changed it to Object => Object('foo') returns a string object... come to thing of it almost all native constructors is a bit wrong... Number, Boolean,Date,String all don't...Array, Object and Error do, but Event and all DOMxxxx-api constructors throw errors...