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Do DOM tree elements with ids become global variables?
...ed elements as properties of the window object. This is doubly bad in that now you have to avoid naming your elements after any member of either the document or the window object you (or any other library code in your project) might want to use.
It also means that these elements are visible as glob...
搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在每台机器建立mongos 、config 、 shard1 、shard2、shard3 五个目录。
因为mongos不存储数据，只需要建立...
Getting the last argument passed to a shell script
...retty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly loops over the arguments if you don't tell it what to loop over, and the fact that for loop variables aren't scoped: they keep the last value they ...
Create an empty list in python with certain size
...f the list. lst.append(something).
(You could use the assignment notation if you were using a dictionary).
Creating an empty list:
>>> l = [None] * 10
>>> l
[None, None, None, None, None, None, None, None, None, None]
Assigning a value to an existing element of the above list:...
Unable to authenticate with Git Bash to Visual Studio Team Services
...
Thanks for this! Any one know how to store the credentials so I don't have to enter them over and over?
– Erick Brown
Dec 3 '14 at 3:50
...
How to exit in Node.js
...()
From the docs:
process.exit([exitcode])
Ends the process with the specified code. If omitted, exit uses the 'success' code 0.
To exit with a 'failure' code:
process.exit(1);
The shell that executed node should see the exit code as 1.
...
How to perform a mysqldump without a password prompt?
I would like to know the command to perform a mysqldump of a database without the prompt for the password.
13 Answers
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Rails raw SQL example
...ode in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
6 Answers
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Find the files existing in one directory but not in the other [closed]
...
diff -r dir1 dir2 | grep dir1 | awk '{print $4}' > difference1.txt
Explanation:
diff -r dir1 dir2 shows which files are only in dir1 and those only in dir2 and also the changes of the files present in both directories i...
How to play a local video with Swift?
...
Sure you can use Swift!
1. Adding the video file
Add the video (lets call it video.m4v) to your Xcode project
2. Checking your video is into the Bundle
Open the Project Navigator cmd + 1
Then select your project root > your Target > ...