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Rails 4: List of available datatypes
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:bigint
:primary_key
:references
:string
:text
:time
:timestamp
Source: http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html#method-i-add_column
These are the same as with Rails 3.
If you use PostgreSQL, you can also take advantage of these:
:hstore
:json
:j...
What is syntax for selector in CSS for next element?
...like $('h1.hc-reform').next('p').addClass('first-paragraph')).
More info: http://www.w3.org/TR/CSS2/selector.html or http://css-tricks.com/child-and-sibling-selectors/
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Detecting arrow key presses in JavaScript
...('down');
break;
}
};
Demo (thanks to user Angus Grant): http://jsfiddle.net/angusgrant/E3tE6/
This should work cross-browser. Leave a comment if there is a browser where it does not work.
There are other ways to get the key code (e.which, e.charCode, and window.event instead of...
How to get Android crash logs?
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This is from http://www.herongyang.com/Android/Debug-adb-logcat-Command-Debugging.html
You can use adb:
adb logcat AndroidRuntime:E *:S
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Ruby arrays: %w vs %W
...f %w and the full list, escape characters and delimiters - have a look at: http://cyreath.blogspot.com/2014/05/ruby-w-vs-w-secrets-revealed.html
Mark
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How to kill zombie process
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Found it at http://www.linuxquestions.org/questions/suse-novell-60/howto-kill-defunct-processes-574612/
2) Here a great tip from another user (Thxs Bill Dandreta):
Sometimes
kill -9 <pid>
will not kill a process. Run
ps -xal
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java.lang.IllegalArgumentException: View not attached to window manager
...response you suggest catch type Exception. Well, this is a bad practice by Google. You can read about it here: Don't Catch Generic Exception.
– Yaniv
Jun 6 '13 at 7:23
17
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Possible heap pollution via varargs parameter
...nstead. See Is @SafeVarargs an appropriate annotation for this method? and https://stackoverflow.com/a/14252221/14731 for a nice explanation of this second kind of error.
References:
http://docs.oracle.com/javase/7/docs/technotes/guides/language/non-reifiable-varargs.html
http://docs.oracle.com/j...
Verify a certificate chain using openssl verify
...SE AT OWN RISK, ABSOLUTELY NO WARRANTY.
#
# COPYRIGHT.CLL can be found at http://permalink.de/tino/cll
# (CLL is CC0 as long as not covered by any Copyright)
OOPS() { echo "OOPS: $*" >&2; exit 23; }
PID=
kick() { [ -n "$PID" ] && kill "$PID" && sleep .2; PID=; }
trap 'kick'...
Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
...难题的方法。
2012年6月，《纽约时报》披露了Google Brain项目，吸引了公众的广泛关注。这个项目是由著名的斯坦福大学的机器学习教授Andrew Ng和在大规模计算机系统方面的世界顶尖专家JeffDean共同主导，用16000个CPU Core...