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Rails: convert UTC DateTime to another time zone
... In irb, when I try Time.now.in_time_zone('CST'), I get the error "undefined method 'in_time_zone'". Are there rails classes that I need in order to get this to work?
– Drew Johnson
Apr 23 '10 at 2:59
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What is the pythonic way to avoid default parameters that are empty lists?
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def my_func(working_list=None):
if working_list is None:
working_list = []
working_list.append("a")
print(working_list)
The docs say you should use None as the default and explicitly test for it in the body ...
How can I save an image with PIL?
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The error regarding the file extension has been handled, you either use BMP (without the dot) or pass the output name with the extension already. Now to handle the error you need to properly modify your data in the frequency doma...
add column to mysql table if it does not exist
...uld be to just try the ALTER TABLE ADD COLUMN command. It should throw an error if the column already exists.
ERROR 1060 (42S21): Duplicate column name 'newcolumnname'
Catch the error and disregard it in your upgrade script.
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How does the Brainfuck Hello World actually work?
Someone sent this to me and claimed it is a hello world in Brainfuck (and I hope so...)
6 Answers
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Emulate ggplot2 default color palette
...e 0 == 360
– hadley
Nov 20 '11 at 6:05
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How can I create Min stl priority_queue?
The default stl priority queue is a Max one (Top function returns the largest element).
8 Answers
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How to assert two list contain the same elements in Python? [duplicate]
...ay to compare to lists that are "almost equal"? In the sense that given an error, i want to assert the equal if the difference btw the elements in the lists are within the error?
– JustANoob
Sep 16 '18 at 10:49
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Get program execution time in the shell
...ve & the method in the comment. In the 1st I get an 'illegal variable' error & the 2nd I get 'unidentified variable'
– DrBwts
May 5 '16 at 12:19
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Linux环境离线安装docker&docker-compose - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
Linux环境离线安装docker&docker-composelinux_docker_install一、docker离线安装1、下载docker离线安装包下载最新版本的 docker （或者选择自己想要安装的版本）到本地。1）docker下载地址：Docker版本下载 ||Docker-compose版本下载备注...
一、docker...