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Set transparent background of an imageview on Android

I am using a web view in which I am adding an image view. How can I set the background of this image view to transparent? 2...
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How to list all methods for an object in Ruby?

...default_timezone", "encode_quoted_value", "reloadable?", "update", "reset_sequence_name", "default_timezone=", "validate_find_options", "find_on_conditions_without_deprecation", "validates_size_of", "execute_simple_calculation", "attr_protected", "reflections", "table_name_prefix...
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How do I find the width & height of a terminal window?

...OLUMNS environmental variables should be able to do the trick. The will be set automatically upon any change in the terminal size. (i.e. the SIGWINCH signal) share | improve this answer | ...
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How to load/edit/run/save text files (.py) into an IPython notebook cell?

... editor after snippets, if snippets enabled if (StackExchange.settings.snippets.snippetsEnabled) { StackExchange.using("snippets", function() { createEditor(); }); } else { createEditor(); ...
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How to use sed to remove the last n lines of a file

I want to remove some n lines from the end of a file. Can this be done using sed? 22 Answers ...
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How do I get the n-th level parent of an element in jQuery?

When I want to get, for example, the 3rd level parent of the element I must write $('#element').parent().parent().parent() Is there a more optimal method for this? ...
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Getting the difference between two sets

So if I have two sets: 7 Answers 7 ...
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Convert character to ASCII numeric value in java

...ava uses a multibyte encoding of Unicode characters. The Unicode character set is a super set of ASCII. So there can be characters in a Java string that do not belong to ASCII. Such characters do not have an ASCII numeric value, so asking how to get the ASCII numeric value of a Java character is una...
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Check string for palindrome

A palindrome is a word, phrase, number or other sequence of units that can be read the same way in either direction. 39 A...
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What is an initialization block?

... in a constructor or a method or an initialization block. What is the use of initialization block? Is it necessary that every java program must have it? ...