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Require returns an empty object
...js got from require('./book') will be the full book.js module object
For more info, here's the docs: http://nodejs.org/api/modules.html
If its possible to dynamically add that schema to one of those ActiveRecord objects, that's one way to solve this. This is actually kind of a tricky situation. I...
View the change history of a file using Git versioning
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In git how is fetch different than pull and how is merge different than rebase?
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Becoming better at Vim [closed]
...ert mode. This forces you to use ESC to get somewhere, and makes you think more Vim-like. Ultimately, I enabled arrow keys again in insert mode, but I hardly ever use them. There is, most often, better ways to get around.
map <up> <nop>
map <down> <nop>
map <left> &lt...
How can I lock a file using java (if possible)
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More importantly, understand that the lock of for the JVM, and not suitable for locking the file for access by individual threads within a single JVM.
– Stu Thompson
Sep 25 '08 at 7:00
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How to achieve code folding effects in Emacs?
...o get a menu of functions (or add it to the menubar; see the Info page for more detail). It provides data for which-function-mode, which will let you see which function you are currently inside in the modeline. (Why are your functions this long, though?)
There is also speedbar, which displays the...
What is the difference between partitioning and bucketing a table in Hive ?
...m in memory.
Bucketing is another technique for decomposing data sets into more manageable parts. For example, suppose a table using date as the top-level partition and employee_id as the second-level partition leads to too many small partitions. Instead, if we bucket the employee table and use empl...
What are the most-used vim commands/keypresses?
...ly use regularly:
References
vim documentation online
advanced vim tips
more useful tips and graphical cheat sheet
General
Nearly all commands can be preceded by a number for a repeat count. eg. 5dd delete 5 lines
<Esc> gets you out of any mode and back to command mode
Commands preceded...
How to test if parameters exist in rails
...There but false.
There but an empty string.
as well. Hard to say without more details of your precise situation.
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Why shouldn't I use mysql_* functions in PHP?
...ql_* functions used to be very popular, but their use is not encouraged anymore. The documentation team is discussing the database security situation, and educating users to move away from the commonly used ext/mysql extension is part of this (check php.internals: deprecating ext/mysql).
And the la...