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Remove carriage return in Unix
...000 h e l l o \r \n g o o d b y e \n
0000017
dos2unix is the way to go if it's installed on your system:
$ cat infile | dos2unix -U | od -c
0000000 h e l l o \n g o o d b y e \n
0000016
If for some reason dos2unix is not available to you, the...
Xcode/Simulator: How to run older iOS version?
I'm thinking of upgrading to iOS SDK 4.2. But what I'm wondering is if I'll still be able to run the simulator as iOS 3.2. This is because I'm creating iAds for iPad but I still want to check if my program will run with iOS 3.2.
...
How do I rename all folders and files to lowercase on Linux?
...les into non-existing directories (e.g. "A/A" into "a/a").
Or, a more verbose version without using "rename".
for SRC in `find my_root_dir -depth`
do
DST=`dirname "${SRC}"`/`basename "${SRC}" | tr '[A-Z]' '[a-z]'`
if [ "${SRC}" != "${DST}" ]
then
[ ! -e "${DST}" ] && mv...
Showing the same file in both columns of a Sublime Text window
...rs, on Linux and Windows, you can use AltShift2 (Option ⌥Command ⌘2 on OS X), which corresponds to View → Layout → Columns: 2 in the menu. If you have the excellent Origami plugin installed, you can use View → Origami → Pane → Create → Right, or the CtrlK, Ctrl→ chord on Windows/Li...
Set up a scheduled job?
...
If you're using a standard POSIX OS, you use cron.
If you're using Windows, you use at.
Write a Django management command to
Figure out what platform they're on.
Either execute the appropriate "AT" command for your users, or update the crontab for ...
OSX - How to auto Close Terminal window after the “exit” command executed.
... Profiles > (Select a Profile) > Shell.
on 'When the shell exits' chosen 'Close the window'
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iPhone UIView Animation Best Practice
...nimations:context: method:
Use of this method is discouraged in iPhone OS 4.0 and later. You should use the block-based animation methods instead.
Eg of Block-based Animation based on Tom's Comment
[UIView transitionWithView:mysuperview
duration:0.75
opti...
水果vs蔬菜智能分类器 - EdgeML图像识别项目 · App Inventor 2 中文网
...历程
初期探索 (第1-2周):
学习App Inventor基础操作
了解PersonalImageClassifier扩展
收集和整理训练数据
搭建基础应用框架
模型训练 (第3-4周):
数据预处理和增强
模型架构选择和调优
训练参数调试
性能评估和...
支撑Github的开源技术 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...本我们依然可以使用新的特性。
Redis
Redis是K/V存储系统，知名的NoSQL实现之一，在Github，主要使用Redis来进行队列中的异常处理。在Github早期，曾尝试过很多的基于Ruby的队列机制，也曾使用Amazon SQS，但是这些方案都不能在G...
Generating a PNG with matplotlib when DISPLAY is undefined
...
The main problem is that (on your system) matplotlib chooses an x-using backend by default. I just had the same problem on one of my servers. The solution for me was to add the following code in a place that gets read before any other pylab/matplotlib/pyplot import:
import matpl...