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Maven: best way of linking custom external JAR to my project?
...d; instead it should be divided in a folder tree. E.g. for the groupId org.json the path should look like org/json/2.0/json-2.0.jar, and not org.json/2.0/json-2.0.jar
– dnang
Nov 15 '17 at 10:35
...
How to use Morgan logger?
...nsole: {
colorize: 'true',
handleExceptions: true,
json: false,
level: 'silly',
label: 'default',
},
file: {
filename: 'some/path/where/the/log/file/reside/default.log',
level: 'silly',
json: false,
handleExceptions: tru...
micro:bit 微控制器教程 · App Inventor 2 中文网
...服务。
Q: 控制指令无效？
A: 检查指令格式是否正确，确保以换行符 “\n” 结尾。
扩展功能
1. 添加更多传感器
可以扩展读取其他传感器数据：
加速度计
磁力计
光传...
How does facebook, gmail send the real time notification?
...ind this, in terms of the actual content returned from those polls, it's a JSON response, with what appears to be a list of events, and info about them. It's minified though, so is a bit hard to read.
In terms of the actual technology, AJAX is the way to go here, because you can control request tim...
JavaScript equivalent of jQuery's extend method
...deep option that jQuery's extend method have.
Note: you can generally use JSON for a similar effect though
var config = {key1: "value1"};
var defaults = {key1: "default1", key2: "default2", keyDeep: {
kd1: "default3",
kd2: "default4"
}};
var settings = JSON.parse(JSON.s...
How do I convert a String object into a Hash object?
...\"2\"}, \"5\"=>{\"value\"=>\"3\"}, \"6\"=>{\"value\"=>\"4\"}}"
JSON.parse hash_as_string.gsub('=>', ':')
share
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How can jQuery deferred be used?
...$.ajax('/foo/', {
data: { value: val },
dataType: 'json',
success: function( resp ){
cache[ val ] = resp;
}
})
);
}
getData('foo').then(function(resp){
// do something with the response, which may
// or may not have...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...据
Format Information 存在于所有的尺寸中，用于存放一些格式化数据的。
Version Information 在 >= Version 7以上，需要预留两块3 x 6的区域存放一些版本信息。
数据码和纠错码
除了上述的那些地方，剩下的地方存放 Data Code 数...
Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
...l on your server, you can explicitly add symfony/icu ~1.0 to your composer.json. 1.0 does not require php-intl, whereas 1.1+ does.
If you don't need translation features:
$ php bin/composer.phar require symfony/icu ~1.0
Without this declaration and trying to install symfony/symfony 2.3 Composer ...
Rails 4: List of available datatypes
....
If you use PostgreSQL, you can also take advantage of these:
:hstore
:json
:jsonb
:array
:cidr_address
:ip_address
:mac_address
They are stored as strings if you run your app with a not-PostgreSQL database.
Edit, 2016-Sep-19:
There's a lot more postgres specific datatypes in Rails 4 and eve...