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Difference between JVM and HotSpot?
...al Machine is stated in the Java Virtual Machine Specification
The JVM is by definition a virtual machine, i. e. a software machine that simulates what a real machine does. Like a real machine, it has an instruction set, a virtual computer architecture and an execution model. It is capable of runni...
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...
SqlAlchemy - Filtering by Relationship Attribute
...ient.query.join(Patient.mother, aliased=True)\
.filter_by(phenoscore=10)
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C read file line by line
...
If your task is not to invent the line-by-line reading function, but just to read the file line-by-line, you may use a typical code snippet involving the getline() function (see the manual page here):
#define _GNU_SOURCE
#include <stdio.h>
#include <stdl...
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):
...
How to select the nth row in a SQL database table?
...indowing functions:
SELECT * FROM (
SELECT
ROW_NUMBER() OVER (ORDER BY key ASC) AS rownumber,
columns
FROM tablename
) AS foo
WHERE rownumber <= n
(which I just copied from the site linked above since I never use those DBs)
Update: As of PostgreSQL 8.4 the standard windowing funct...
How to sort objects by multiple keys in Python?
Or, practically, how can I sort a list of dictionaries by multiple keys?
8 Answers
8
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Why does git perform fast-forward merges by default?
...dded the feature.
Jakub Narębski also mentions the config merge.ff:
By default, Git does not create an extra merge commit when merging a commit that is a descendant of the current commit. Instead, the tip of the current branch is fast-forwarded.
When set to false, this variable tells Git to...
Why does Google prepend while(1); to their JSON responses?
...he URL via a <script> tag. The URL is visited with your cookies, and by overriding the global array constructor or accessor methods they can have a method called whenever an object (array or hash) attribute is set, allowing them to read the JSON content.
The while(1); or &&&BLAH&a...
When do you use POST and when do you use GET?
...
@ePharaoh: It stops people reading passwords by looking over the users shoulder at the address bar.
– Quentin
Jun 3 '09 at 9:59
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