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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
... problematic matrix sizes? I am no expert on caching issues, but excellent info on cache related performance issues here.
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What is the difference between OpenID and SAML?
...ch this with a user in your database? Somehow, for example by storing this information with a new account and recognizing this when user visits your site again. Note that any other information about the user (including his name or email) cannot be trusted!
On the other hand, if there's an explicit ...
Deleting elements from std::set while iterating
...
And that will work for vector, set, deque, etc.
See cppReference for more info.
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Assignment inside lambda expression in Python
.... :)
Lastly, you can do anything in pure Python lambda: http://vanderwijk.info/blog/pure-lambda-calculus-python/
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How to return a string value from a Bash function
...al on the fact that declare creates local variables inside functions (that info is not given by help declare): "...When used in a function, declare and typeset make each name local, as with the local command, unless the -g option is supplied..."
– init_js
Oct ...
MongoDB: Combine data from multiple collections into one..how?
...ction and you want to have a new collection that has some user demographic info for each comment.
Let's say the users collection has the following fields:
_id
firstName
lastName
country
gender
age
And then the comments collection has the following fields:
_id
userId
comment
created
You woul...
Why JSF calls getters multiple times
...tters that are computing or initializing heavy objects!
See here, for more info.
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How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
...sr/local/lib/node_modules' # <--- add this ~/.bashrc
You can run brew info node for more details regarding your node installs.
consider using NVM instead of brew
NVM (node version manager) is a portable solution for managing multiple versions of node
https://github.com/nvm-sh/nvm
> nvm...
List of foreign keys and the tables they reference
...and r_constraint_name of the table ALL_CONSTRAINTS. This will give you the info you want:
SELECT a.table_name, a.column_name, a.constraint_name, c.owner,
-- referenced pk
c.r_owner, c_pk.table_name r_table_name, c_pk.constraint_name r_pk
FROM all_cons_columns a
JOIN all_constrain...
What is the { get; set; } syntax in C#?
... here.
get and set are accessors, meaning they're able to access data and info in private fields (usually from a backing field) and usually do so from public properties (as you can see in the above example).
There's no denying that the above statement is pretty confusing, so let's go into some exa...