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Formula px to dp, dp to px android
...ormation, which can be achieved like this:
[Edit] This is not meant to be mixed with Android's internal dp unit, as this is of course still based on the screen buckets. Use this where you want a unit that should render the same real size on different devices.
Convert dp to pixel:
public int dpTo...
iOS开发如何提高 - 其他 - 清泛IT社区，为创新赋能！
许多人在博客和微信上咨询我iOS开发如何提高，经过一番思考之后，我能想到如下一些提高的办法，我个人也是通过这些方法来提高的。阅读博客在现在这个碎片化阅读流行的年代，博客的风头早已被微博盖过。而我却坚持写作...
Send message to specific client with socket.io and node.js
I'm working with socket.io and node.js and until now it seems pretty good, but I don't know how to send a message from the server to an specific client, something like this:
...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...，客户端自然就是MySQL客户端。OceanBase仅仅使用了libeasy的IO线程部分，工作线程是使用了我们自己的线程池。
主要说如下几个方面：
一、OceanBase启动时的使用模式
二、 基础数据结构
2.1 easy_list_t
2.2 easy_pool_t
2.3 easy_buf_t
...
ios app maximum memory budget
I'm working on an ios game that's targeting as a minimum the 3gs. We are using HD assets for retina display devices (iphone 4, ipod touch 4th gen).
...
Change text color based on brightness of the covered background area?
...
mix-blend-mode does the trick:
header {
overflow: hidden;
height: 100vh;
background: url(https://www.w3schools.com/html/pic_mountain.jpg) 50%/cover;
}
h2 {
color: white;
font: 900 35vmin/50vh arial;
...
Is “else if” faster than “switch() case”? [duplicate]
... more readable than if-elseif chain. which is also prone to errors such as mixing up if-else; if-else; in it which has other side effects. with switch you see n-fork right away, while with continous if-else-if-else it may be somewhat hidden.
– aiodintsov
Nov 26...
Socket.IO Authentication
I am trying to use Socket.IO in Node.js, and am trying to allow the server to give an identity to each of the Socket.IO clients. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up d...
Uppercase Booleans vs. Lowercase in PHP
...ut given that it's basically case-insensitive, there is nothing strange in mixed-case expressions being the same. What is nonsense, however, that it mixes case-sensitivity and case-insensitivity with general insensibility. (See e.g.: stackoverflow.com/questions/5643496/…)
– ...
StringIO in Python3
I am using Python 3.2.1 and I can't import the StringIO module. I use
io.StringIO and it works, but I can't use it with numpy 's genfromtxt like this:
...