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Compare object instances for equality by their attributes
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return hash((self.foo, self.bar))
A general solution, like the idea of looping through __dict__ and comparing values, is not advisable - it can never be truly general because the __dict__ may have uncomparable or unhashable types contained within.
N.B.: be aware that before Python 3, yo...
What is ECMAScript?
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JavaScript is a subset of ECMAScript. JavaScript is basically ECMAScript at its core but builds upon it. Languages such as ActionScript, JavaScript, JScript all use ECMAScript as its core. As a comparison, AS/JS/JScript are 3 different cars, but they all use the same engine... eac...
Can you autoplay HTML5 videos on the iPad?
The <video> tags autoplay="autoplay" attribute works fine in Safari.
6 Answers
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Google Maps V3 - How to calculate the zoom level for a given bounds
...umption about the projection), but it would mean the function could not be called until after the map has been created and the "projection_changed" event has fired.
– John S
Apr 21 '16 at 18:01
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Shards and replicas in Elasticsearch
...we need to create an index.
When you create an index (an index is automatically created when you index the first document as well) you can define how many shards it will be composed of. If you don't specify a number it will have the default number of shards: 5 primaries. What does it mean?
It mea...
How to resolve symbolic links in a shell script
...to a directory that actually exists; plus, you must cd to it first, before calling pwd -P. In other words: it won't allow you to resolve (see the target of) symlinks to files or of broken symlinks, and for resolving existing-directory symlinks you have to do additional work (restore the previous wor...
What are DDL and DML?
...ds from a database table
MERGE – UPSERT operation (insert or update)
CALL – call a PL/SQL or Java subprogram
EXPLAIN PLAN – interpretation of the data access path
LOCK TABLE – concurrency Control
DCL
DCL is short name of Data Control Language which includes commands
su...
JavaScript seconds to time string with format hh:mm:ss
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Thanks for the prototype idea, I like how it is easier to call it. I prototyped the Number so I can call it on them too. I also found this answer that would remove the hours and minutes if they were not needed.
– alunsford3
May 25 '12 at 5:44
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Can I create a named default constraint in an add column statement in SQL Server?
...not put the NOT NULL adjacent to the data type? It may be syntactically valid to put it after the constraint, but it seems confusing to put it there.
– Tullo_x86
Jan 7 '19 at 17:14
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How can I check if a command exists in a shell script? [duplicate]
...e masked by a binary (for example, on a Linux box, if you create a program called which which appears in path before the real which, things hit the fan. type, on the other hand, is a shell built-in (yes, a subordinate inadvertently did this once).
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