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How do you add an action to a button programmatically in xcode
...click takes the sender argument, that is replaced with a : in the selector string.
– Etan
Jan 14 '16 at 10:29
This wor...
What is the difference between lock and Mutex?
...g system construct, and can be used for system-wide synchronization, using string data (instead of a pointer to data) as its identifier. Two mutexes that reference two strings in two completely different memory addresses, but having the same data, will actually utilize the same operating-system mut...
In HTML5, is the localStorage object isolated per page/domain?
...rently stores javascript data types (Array, Boolean, Date, Float, Integer, String and Object), provides lightweight data obfuscation, automatically compresses strings, and facilitates query by key (name) as well as query by (key) value.
[DISCLAIMER] I am the author of the utility [/DISCLAIMER]
Exa...
What is the use of “assert” in Python?
...gt;>> assert 2 > 5
Traceback (most recent call last):
File "<string>", line 1, in <fragment>
builtins.AssertionError:
The first statement does nothing, while the second raises an exception. This is the first hint: asserts are useful to check conditions that should be true in...
How to: Define theme (style) item for custom widget
...leable name="CustomImageButton">
<attr name="customAttr" format="string"/>
</declare-styleable>
Declare an attribute you will use for a style reference (in attrs.xml):
<declare-styleable name="CustomTheme">
<attr name="customImageButtonStyle" format="reference"/>...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
... @Ignore
public void itShouldStoreAMessage() throws Exception{
String amqUrl = "nio://localhost:61616";
Camel camel = (Camel) CamelExtension.apply(system);
camel.context().addComponent("activemq", ActiveMQComponent.activeMQComponent(amqUrl));
TestProbe probe = Te...
What is the 'dynamic' type in C# 4.0 used for?
...= foo / 2.5; // Does not compile
foo = Math.Sqrt(foo); // Does not compile
string bar = foo.ToString("c");
The second line does not compile because 2.5 is typed as a double and line 3 does not compile because Math.Sqrt expects a double. Obviously, all you have to do is cast and/or change your vari...
Argparse optional positional arguments?
...gt; parser.add_argument('-v', action='store_true')
_StoreTrueAction(option_strings=['-v'], dest='v', nargs=0, const=True, default=False, type=None, choices=None, help=None, metavar=None)
>>> parser.add_argument('dir', nargs='?', default=os.getcwd())
_StoreAction(option_strings=[], dest='dir...
Is null reference possible?
...red_ptr<Error>> _instances;
static Error& NewInstance(const string& name, bool isNull = false);
private:
bool _isNull;
Error(const string& name, bool isNull = false) : _name(name), _isNull(isNull) {};
Error() {};
Error(const Error& src) {};
Error& operator=(...
format date with moment.js
I have a string in this format:
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