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Can I apply the required attribute to fields in HTML5?

...e attribute specified, and has a display size of 1 (do not have SIZE=2 or more - omit it if not needed); and if the value of the first option element in the select element's list of options (if any) is the empty string (i.e. present as value=""), and that option element's paren...
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Android static object lifecycle

... 240 Lets start with a bit of background: What happens when you start an application? The OS st...
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Custom attributes in styles.xml

... | edited Jan 26 '18 at 15:35 answered Jul 29 '11 at 3:23 ...
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Why does z-index not work?

... | edited Oct 11 '19 at 12:38 LinusGeffarth 18.8k2020 gold badges9090 silver badges148148 bronze badges ...
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How to store date/time and timestamps in UTC time zone with JPA and Hibernate

... With Hibernate 5.2, you can now force the UTC time zone using the following configuration property: <property name="hibernate.jdbc.time_zone" value="UTC"/> For more details, check out this article. ...
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Android: Why does long click also trigger a normal click?

... 286 From Event Listeners: onLongClick() - This returns a boolean to indicate whether you have ...
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HashSet versus Dictionary w.r.t searching time to find if an item exists

... | edited Apr 4 '14 at 12:55 Bernhard Barker 49.5k1313 gold badges7777 silver badges118118 bronze badges ...
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CSS media queries: max-width OR max-height

... 962 Use a comma to specify two (or more) different rules: @media screen and (max-width: 995px) , sc...
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What is the difference between isinstance('aaa', basestring) and isinstance('aaa', str)?

... / \ str unicode 'basestring' introduced in Python 2.3 can be thought of as a step in the direction of string unification as it can be used to check whether an object is an instance of str or unicode >>> string1 = "I am a plain string" >>> string2 = u"I am...