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How to get the last value of an ArrayList
....size() - 1);
E is the element type. If the list is empty, get throws an IndexOutOfBoundsException. You can find the whole API documentation here.
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What are metaclasses in Python?
...ass is an instance of a metaclass.
While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recreate somet...
List of installed gems?
...p = Gem::Dependency.new(name, Gem::Requirement.default)
specs = Gem.source_index.search(dep)
puts specs[0..5].map{ |s| "#{s.name} #{s.version}" }
# >> Platform 0.4.0
# >> abstract 1.0.0
# >> actionmailer 3.0.5
# >> actionpack 3.0.5
# >> activemodel 3.0.5
# >> acti...
How to extract request http headers from a request using NodeJS connect
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NOTE: the named index value is FreakING!! case sensitative
– Steve
Mar 16 '17 at 3:04
11
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Should I use a class or dictionary?
...ould your __init__ code go?
Classes are for bundling related data (and usually code).
Dictionaries are for storing key-value relationships, where usually the keys are all of the same type, and all the values are also of one type. Occasionally they can be useful for bundling data when the key/attri...
Get all Attributes from a HTML element with Javascript/jQuery
... if( this.length ) {
$.each( this[0].attributes, function( index, attr ) {
attributes[ attr.name ] = attr.value;
} );
}
return attributes;
};
})(jQuery);
sha...
MaterialDialog 对话框增强扩展 · App Inventor 2 中文网
...中的分钟。
OnItemSelected 列表项选择时(dialogId,item,index)
当用户在列表对话框中选择某一项时触发。
dialogId：列表对话框的唯一标识符。
item：被选中项的文本内容。
index：被选中项在列表中的索引（从 0 ...
Why not use tables for layout in HTML? [closed]
...s in them.
It's good to separate content from layout
But this is a fallacious argument; Cliché Thinking.
It's not fallacious at all because HTML was designed intentionally. Misuse of an element might not be completely out of question (after all, new idioms have developed in other languages...
check if a std::vector contains a certain object? [duplicate]
.... Does set have a count method like map? I also want to be able to get the index of the element in a set.
– IAbstract
Apr 3 '15 at 12:30
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How to list all functions in a Python module?
I have a python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it.
...