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Print number of keys in Redis
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Somebody is going to read this, do this on a production box some day without thinking it through and then push it over the edge...probably has already happened.
– Stu Thompson
Mar 3 '15 at 16:20
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How do I measure time elapsed in Java? [duplicate]
.... However this TSC may not be the same between cores/processors. If your thread is rescheduled to a different core partway through, you will end up with a start timestamp from core 1 and a end timestamp from core 2 but they might not be the same time (you can even get negative values) - some example...
Android, getting resource ID from string?
...ll it like this
getResourceId("myAppName", "string", getPackageName());
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What is “entropy and information gain”?
I am reading this book ( NLTK ) and it is confusing. Entropy is defined as :
7 Answers
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How many system resources will be held for keeping 1,000,000 websocket open? [closed]
... data to/from each of those connections. If the incoming connections are spread out over a long period, and they are mostly idle or infrequently sending small chunks of static data then you could probably get much higher than even 1,000,000 simultaneous connections. However, even under those condit...
What is the difference between bool and Boolean types in C#
...though there is a link from the older to the newer documentation, I didn't read the newer documentation thoroughly enough to notice the single ? difference.
– Logan Pickup
Oct 27 '15 at 20:16
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Postgres unique constraint vs index
...violates unique constraint "master_con_id_key"
DETAIL: Key (con_id)=(0) already exists.
test=# insert into master values (1, 0);
ERROR: duplicate key value violates unique constraint "master_unique_idx"
DETAIL: Key (ind_id)=(0) already exists.
test=#
It works as expected!
Foreign keys
Now we'...
How to checkout a specific Subversion revision from the command line?
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If you already have it checked out locally then you can cd to where it is checked out, then use this syntax:
$ svn up -rXXXX
ref: Checkout a specific revision from subversion from command line
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What is the purpose of Flask's context stacks?
... to access various functionality. For example, you probably have code that reads...
from flask import request
Then, during a view, you might use request to access the information of the current request. Obviously, request is not a normal global variable; in actuality, it is a context local value....
Get list of databases from SQL Server
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I doubt, it (localhost), is read from some configuration file. I couldn't get it worked with my "myhost" (which is my correct host name, say obtained by Environment.MachineName).Will this work if I replace "localhost" with "myhost"?
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