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Find the index of a dict within a list, by matching the dict's value
...ne)
# 1
If you need to fetch repeatedly from name, you should index them by name (using a dictionary), this way get operations would be O(1) time. An idea:
def build_dict(seq, key):
return dict((d[key], dict(d, index=index)) for (index, d) in enumerate(seq))
info_by_name = build_dict(lst, ke...
How to grant remote access permissions to mysql server for user?
...om:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%.example.com'
IDENTIFIED BY 'some_characters'
WITH GRANT OPTION;
FLUSH PRIVILEGES;
If name resolution is not going to work, you may also grant access by IP or subnet:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.%'
IDENTIFIED BY 'so...
What is meant by immutable?
...completely explicit that the field is immutable. Right now it's immutable by convention
– JaredPar
Nov 11 '08 at 0:15
7
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How to replace a character by a newline in Vim
I'm trying to replace each , in the current file by a new line:
11 Answers
11
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400 BAD request HTTP error code meaning?
...means that the request was malformed. In other words, the data stream sent by the client to the server didn't follow the rules.
In the case of a REST API with a JSON payload, 400's are typically, and correctly I would say, used to indicate that the JSON is invalid in some way according to the API s...
What do the makefile symbols $@ and $< mean?
...go, I had spend some time figuring out what's happend in the result caused by this behaviour.
– Chan Kim
Jul 11 '18 at 5:48
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Efficiency of purely functional programming
... an algorithm in the pure Lisp that runs in O(n log n) time (based on work by Ben-Amram and Galil [1992] about simulating random access memory using only pointers). Pippenger also establishes that there are algorithms for which that is the best you can do; there are problems which are O(n) in the im...
How to allow remote connection to mysql
...
That is allowed by default on MySQL.
What is disabled by default is remote root access. If you want to enable that, run this SQL command locally:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUS...
Evenly distributing n points on a sphere
...er time as points are added. Here's another great interactive example made by @gman. And here's a simple implementation in python.
import math
def fibonacci_sphere(samples=1):
points = []
phi = math.pi * (3. - math.sqrt(5.)) # golden angle in radians
for i in range(samples):
...
SqlAlchemy - Filtering by Relationship Attribute
...ient.query.join(Patient.mother, aliased=True)\
.filter_by(phenoscore=10)
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