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Run/install/debug Android applications over Wi-Fi?
...9.
Connect the device via USB and make sure debugging is working;
adb tcpip 5555. This makes the device to start listening for connections on port 5555;
Look up the device IP address with adb shell netcfg or adb shell ifconfig with 6.0 and higher;
You can disconnect the USB now;
adb connect <DE...
Importance of varchar length in MySQL table
...s are inserted dynamically. Because I can not be certain of the length of strings and do not want them cut off, I make them varchar(200) which is generally much bigger than I need. Is there a big performance hit in giving a varchar field much more length than necessary?
...
Why are C character literals ints instead of chars?
...nerating code to get an 'A' into the register may prefer to waste a little extra memory and encode the value as 0 'A' or 'A' 0 - depending on endianness, and also ensuring it is aligned properly (i.e. not at an odd memory address).
My guess is that C's simply carried this level of CPU-centric behav...
How do I access the host machine from the guest machine? [closed]
...
On the XP machine, find your IP address by going to the command prompt and typing ipconfig. Try replacing the last number with 1 or 2. For example, if your IP address is 192.168.78.128, use http://192.168.78.1:3000.
...
Can I embed a custom font in an iPhone application?
...ppFonts key in their Info.plist file. The value of this key is an array of strings identifying the font files in the application’s bundle. When the system sees the key, it loads the specified fonts and makes them available to the application.
Once the fonts have been set in the Info.plist, you c...
How to avoid isset() and empty()
...
Just write a function for that. Something like:
function get_string($array, $index, $default = null) {
if (isset($array[$index]) && strlen($value = trim($array[$index])) > 0) {
return get_magic_quotes_gpc() ? stripslashes($value) : $value;
} else {
re...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...o_handler_pt));
//以下都是对于OceanBase 0.4 mergeserver的obmysql端口来说的
// 将mergeserver需要回复给mysql客户端的结果以easy_buf_t(libeasy用来管理输入输出缓冲区的数据结构)的形式加到请求所属于的easy_connection_t(TCP连接)的输出缓冲区链...
Java regex email
...\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE);
public static boolean validate(String emailStr) {
Matcher matcher = VALID_EMAIL_ADDRESS_REGEX.matcher(emailStr);
return matcher.find();
}
Works fairly reliably.
s...
Rails: Get Client IP address
In Rails, what's the best way to get the ip address of the client connecting to the server?
5 Answers
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
...that in "modern" languages like Java, C#, and Python, all objects have a toString/ToString/__str__ function that is called by the I/O routines. AFAIK, only C++ does it the other way around by using stringstream as the standard way of converting to a string.
Poor support for i18n
Iostream-based ou...