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Scala: Nil vs List()
In Scala, is there any difference at all between Nil and List() ?
3 Answers
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In an array of objects, fastest way to find the index of an object whose attributes match a search
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The simplest and easiest way to find element index in array.
ES5 syntax: [{id:1},{id:2},{id:3},{id:4}].findIndex(function(obj){return obj.id == 3})
ES6 syntax: [{id:1},{id:2},{id:3},{id:4}].findIndex(obj => obj.id == 3)
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How to add icon inside EditText view in Android ?
...pear inside an EditText in the left edge? such as search box in Facebook Android app?
6 Answers
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jQuery add required to input fields
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required is a boolean attribute and should only ever be omitted (for "false"), or have the same value as its name (i.e. "required") for "true". It's actually better to use .prop().
– Alnitak
Jan 10 at 10:33
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Create a custom View by inflating a layout?
...ss of RelativeLayout, add all our your components in code (TextView, etc), and in your constructor you can read the attributes passed in from the XML. You can then pass that attribute to your title TextView.
http://developer.android.com/guide/topics/ui/custom-components.html
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How To Create Table with Identity Column
...'s specific situation, would be to edit the one line in the generated DDL, and not try to write it from scratch using simplest syntax. Also the example you gave does not assign a name to the PK constraint as OP has. Many prefer my constraints named so they have the same name in all environments (dev...
How to set a Javascript object values dynamically?
...j[prop] = value;
That should work. You mixed up the name of the variable and its value. But indexing an object with strings to get at its properties works fine in JavaScript.
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CSS: How to remove pseudo elements (after, before,…)?
...lly clear out other content-related styles, thus even if you have paddings and margins set they become inert?
– Ryan Williams
Jul 25 '14 at 13:25
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What is the C# equivalent to Java's isInstance()?
I know of is and as for instanceof , but what about the reflective isInstance() method?
5 Answers
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Rails: How to list database tables/objects using the Rails console?
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You are probably seeking:
ActiveRecord::Base.connection.tables
and
ActiveRecord::Base.connection.columns('projects').map(&:name)
You should probably wrap them in shorter syntax inside your .irbrc.
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