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VideoRecorder 拓展：前台预览录制 + 后台无预览录制，支持分辨率、码率设...
...ocus
GetSupportedVideoQualities()
获取当前摄像头支持的画质列表
HasRecordAudioPermission()
检查是否有录音权限
RequestRecordAudioPermission()
打开系统应用权限设置页面，引导用户开启录音权限
VideoRecorder 方法
I...
MLKitCodeScanner 拓展：离线条码 / 二维码识别 · App Inventor 2 中文网
...片（联系人）二维码。多个电话/邮箱只给第一个，完整列表见 detailJson；多个网址用英文逗号分隔。
GotEmail(address,subject,body,type)
扫到电子邮件二维码。type 为 WORK、HOME 或 UNKNOWN。
GotPhone(number,type)
扫到电话号码二维码。type ...
Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...ontent type of the same model, let say JSON payload, webpage, e-mail body, CSV and so on.
Non Java programmer may have difficulties to work with JSP templates, when non technical people never had difficulties to modify regular templates.
I was asking same question long time ago and ended by writin...
Factors in R: more than an annoyance?
...theory is that 90% of why they're a pain is because in read.table and read.csv, the argument stringsAsFactors = TRUE by default (and most users miss this subtlety). I say they are useful because model fitting packages like lme4 use factors and ordered factors to differentially fit models and determi...
Can the :not() pseudo-class have multiple arguments?
... @BoltClock Delayed, but, hence the desire for the :not([attr],[attr]) CSV format as well :-P
– TylerH
Feb 20 '17 at 15:12
...
How to do a PUT request with curl?
...a file with a POST request:
curl -X POST "YOUR_URI" -F 'file=@/file-path.csv'
Alternative solution:
You can use the POSTMAN app from Chrome Store to get the equivalent cURL request. This is especially useful when writing more complicated requests.
For the request with other formats or for diff...
Progress indicator during pandas operations
...as being lazy about data import (pandas is just too good at handling messy csv!!) and a few of my entries (~1%) had completely whacked out insertions (think whole records inserted into single fields). Eliminating these cause a massive speed up in the feature rollup since there was no ambiguity abou...
JavaScript/jQuery to download file via POST with JSON data
...ge if the return mime type is something that a browser would open, but for csv and such it's perfect
Example requires underscore and jquery
var postData = {
filename:filename,
filecontent:filecontent
};
var fakeFormHtmlFragment = "<form style='display: none;' method='POST' action='"+SAV...
ByteArray 实验 - 拼一个二进制协议帧，再把它拆开 · App Inventor 2 中文网
...。
本例设置 Base = 1，所以下标从 1 开始（App Inventor 的列表也是 1 基），不是 0。
第 4 步：加一段文本
协议里常常要带设备名之类的字符串：
when 按钮_带文本.Click() {
UrsAI2ByteArray1.Base = 1
UrsAI2ByteArray1.MsbF...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
...acteristic，看到它的UUID为2A06。然后我们到蓝牙官网定义的列表Characteristics搜索2A06，进入Characteristic的详情页面。
于是，该Characteristic操作定义非常明确了。点击“Write new value”，可以写入新的值。若写入1或2，则可以引起手环...