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Do interfaces inherit from Object class in java
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Do interfaces inherit from Object class in Java?
No, they don't. And there is no common "root" interface implicitly inherited by all interfaces either (as in the case with classes) for that matter.(*)
If no then how we are able to call the method of object class on interface instance
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How to trim whitespace from a Bash variable?
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Let's define a variable containing leading, trailing, and intermediate whitespace:
FOO=' test test test '
echo -e "FOO='${FOO}'"
# > FOO=' test test test '
echo -e "length(FOO)==${#FOO}"
# > length(FOO)==16
How to remove all whitespace (denoted by [:space:] in tr):
F...
jQuery 1.9 .live() is not a function
... in version 1.9 onwards.
That means if you are upgrading from version 1.8 and earlier, you will notice things breaking if you do not follow the migration guide below. You must not simply replace .live() with .on()!
Read before you start doing a search and replace:
For quick/hot fixes on a live ...
Semicolons superfluous at the end of a line in shell scripts?
...lons at the end of a line are superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details.
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Android map v2 zoom to show all the markers
... have 10 markers in the GoogleMap . I want to zoom in as much as possible and keep all markers in view? In the earlier version this can be achieved from zoomToSpan() but in v2 I have no idea how about doing that. Further, I know the radius of the circle that needs to be visible.
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Get started with Latex on Linux [closed]
Impressed by is-latex-worth-learning-today , and many how-to's on Windows,
8 Answers
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don't fail jenkins build if execute shell fails
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To stop further execution when command fails:
command || exit 0
To continue execution when command fails:
command || true
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Inserting image into IPython notebook markdown
I am starting to depend heavily on the IPython notebook app to develop and document algorithms. It is awesome; but there is something that seems like it should be possible, but I can't figure out how to do it:
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leiningen - how to add dependencies for local jars?
I want to use leiningen to build and develop my clojure project. Is there a way to modify project.clj to tell it to pick some jars from local directories?
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What is the difference between single-quoted and double-quoted strings in PHP?
...le confused why I see some code in PHP with string placed in single quotes and sometimes in double quotes.
12 Answers
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