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How can I replace a newline (\n) using sed?
...e with a space on the pattern space (which is the whole file).
Here is cross-platform compatible syntax which works with BSD and OS X's sed (as per @Benjie comment):
sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/ /g' file
As you can see, using sed for this otherwise simple problem is problematic. For a...
Singletons vs. Application Context in Android?
Recalling this post enumerating several problems of using singletons
and having seen several examples of Android applications using singleton pattern, I wonder if it's a good idea to use Singletons instead of single instances shared through global application state (subclassing android.os.Applicat...
Iterate through a HashMap [duplicate]
...ChanjungKim yes , its the Name of the HashMap
– heman123
Feb 27 '19 at 22:29
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加密签名使用指导 · App Inventor 2 中文网
...账号.Text, "&pwd=", 加密签名1.SHA256(join(密码输入框1.Text, "fun123-salt"))))
}
盐可以是任意一段固定文字，App 和服务器保持一致即可。MD5 已不适合单独用来保存密码，优先用 SHA256。
案例二：调用接口的参数签名
很...
How do I convert an integer to binary in JavaScript?
... This link may be of interest to some stackoverflow.com/questions/12337360/… anyhow, Your answer contradicts itself, you write "Javascript represents negative binary integers in two's-complement notation." And your code says " Here you could represent the number in 2s compliment but thi...
Automatically start forever (node) on system restart
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You can use forever-service for doing this.
npm install -g forever-service
forever-service i...
Jdbctemplate query for string: EmptyResultDataAccessException: Incorrect result size: expected 1, ac
... edited Jun 11 '18 at 16:38
ryan123
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answered May 16 '12 at 5:46
Rakesh J...
Finding the author of a line of code in Mercurial
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123
On the command-line, you'd want to use hg annotate -u (-u can be combined with -n to get the l...
How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
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OLD only use a reference
Dependencies
uses express, socket.io, node_redis and last but not l...
What goes into your .gitignore if you're using CocoaPods?
I've been doing iOS development for a couple of months now and just learned of the promising CocoaPods library for dependency management.
...