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In Python, how can you load YAML mappings as OrderedDicts?
...he ordering is not guaranteed, but of course there is ordering in the YAML file and the appropriate parser can just hold on to that and transparently generate an object that keeps the ordering. You just need to choose the right parser, loader and dumper¹:
import sys
from ruamel.yaml import YAML
y...
What's the difference between the data structure Tree and Graph?
...ented very compactly in an array; there are other succinct representations etc. etc.), but probably the most popular and useful way to represent them is using a recursive pointer-based structure. The representation is not unique for unrooted trees, but that is immaterial.
– j_...
In Python script, how do I set PYTHONPATH?
I know how to set it in my /etc/profile and in my environment variables.
6 Answers
6
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...les for when you can omit (omit) parentheses, dots, braces, = (functions), etc.?
6 Answers
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Avoiding instanceof in Java
...o make the logic of "handle" part of each 'switching' class - i.e. Integer etc. in this case. Clearly this is not practical. Sometimes it isn't even logically the right place to put the code. He recommends the 'instanceof' approach as being the lesser of several evils.
As with all cases where you a...
SQL update query using joins
...
UPDATE im
SET mf_item_number = gm.SKU --etc
FROM item_master im
JOIN group_master gm
ON im.sku = gm.sku
JOIN Manufacturer_Master mm
ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
gm.manufacturerID = 34
To make it cl...
Difference between a user and a schema in Oracle?
...other stuff.
SYS is a schema that includes tons of tables, views, grants, etc etc etc.
SYSTEM is a schema.....
Technically -- A schema is the set of metadata (data dictionary) used by the database,
typically generated using DDL. A schema defines attributes of the database, such as
tables, colum...
Choosing a Java Web Framework now? [closed]
...e in memory database to an actual RDBMS is a one line change in the config file.
The MVC setup is done very well. The Model class you extend to create your domain objects integrates with the JPA entity manager. They're not just POJO's.
Mapping URL's to controllers is simple and flexible and all in o...
Android: Clear the back stack
...
What about adding in manifests file for related activity :
android:noHistory="true"
to the activity definition of B and C ? They will not be added to the backstack. Not sure if that is what you want.
...
What are the differences between Mustache.js and Handlebars.js?
...
Another difference between them is the size of the file:
Mustache.js has 9kb,
Handlebars.js has 86kb, or 18kb if using precompiled templates.
To see the performance benefits of Handlebars.js we must use precompiled templates.
Source: An Overview of JavaScript Templating ...