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Installing Python 3 on RHEL
...opt/local, just add --prefix=/opt/local.
After the make install step: In order to use your new Python installation, it could be, that you still have to add the [prefix]/bin to the $PATH and [prefix]/lib to the $LD_LIBRARY_PATH (depending of the --prefix you passed)
...
PHPUnit: assert two arrays are equal, but order of elements not important
...hat is a good way to assert that two arrays of objects are equal, when the order of the elements in the array is unimportant, or even subject to change?
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quick random row selection in Postgres
...u want to use a higher LIMIT... I need to get 3 items so I need to use the ORDER BY RANDOM() syntax.
– Alexis Wilke
Nov 24 '12 at 1:29
1
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ROW_NUMBER() in MySQL
...ent. You might get the results you expect, but this is not guaranteed. The order of evaluation for expressions involving user variables is undefined and may change based on the elements contained within a given statement."
– Roland Bouman
Jan 11 '10 at 13:51
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What does the servlet value signify
... (optional) integer value. If the value is 0 or greater,
it indicates an order for servlets to be loaded, servlets with higher numbers get
loaded after servlets with lower numbers.
The JSP 3.1 spec (JSR 340) says this on page 14-160:
The element load-on-startup indicates that this servlet ...
Singleton: How should it be used
...arginally more reliable in languages without a well-defined initialization order, this usage is still the moral equivalent of a global variable. It's a global variable dressed up in some awkward syntax (foo::get_instance() instead of g_foo, say), but it serves the exact same purpose (a single objec...
How to use phpexcel to read data and insert into database?
...
In order to read data from microsoft excel 2007 by codeigniter just create a helper function excel_helper.php and add the following in:
require_once APPPATH.'libraries/phpexcel/PHPExcel.php';
require_once APPPATH.'l...
How to handle click event in Button Column in Datagridview?
...y the documentation at MSDN to hardcode the column index or column name in order to determine if a button was clicked. The click event registers for the entire grid, so somehow you need to determine that a button was clicked, but you should not do so by assuming that your button lives in a particul...
How is attr_accessible used in Rails 4?
...ible in the model anymore.
Dealing with accepts_nested_attributes_for
In order to use accepts_nested_attribute_for with strong parameters, you will need to specify which nested attributes should be whitelisted.
class Person
has_many :pets
accepts_nested_attributes_for :pets
end
class PeopleC...
What does “mro()” do?
...
Why is it called method resolution order instead of attribute resolution order?
– Bentley4
Mar 24 '13 at 13:07
1
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