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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
... 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 SQLite 拓展：超流行兼容主流SQL语...
How do I lock the orientation to portrait mode in a iPhone Web Application?
...wport {
orientation: portrait;
}
Here is the "Can I Use" page (as of 2019 only IE and Edge):
https://caniuse.com/#feat=mdn-css_at-rules_viewport_orientation
Spec(in process):
https://drafts.csswg.org/css-device-adapt/#orientation-desc
MDN:
https://developer.mozilla.org/en-US/docs/Web/CSS/@vi...
Convert a list of data frames into one data frame
...gt; packageVersion("data.table")
[1] ‘1.10.4’
UPDATE: Rerun 06-Aug-2019.
set.seed(21)
library(microbenchmark)
dflist <- vector(length=10,mode="list")
for(i in 1:100)
{
dflist[[i]] <- data.frame(a=runif(n=260),b=runif(n=260),
c=rep(LETTERS,10),d=rep(LET...
Does Django scale? [closed]
...s Mahalo. I'm told they handle roughly 10 million uniques a month. Now, in 2019, Mahalo is powered by Ruby on Rails.
Abroad, the Globo network (a network of news, sports, and entertainment sites in Brazil); Alexa ranks them in to top 100 globally (around 80th currently).
Other notable Django users...
getting date format m-d-Y H:i:s.u from milliseconds
...-d-Y H:i:s').substr(fmod(microtime(true), 1), 1);
example output:
02-06-2019 16:45:03.53811192512512
If you have a need to limit the number of decimal places then the below line (credit mgutt) would be a good alternative. (With the code below, the 6 limits the number of decimal places to 6.)
e...
How to grant permission to users for a directory using command line in Windows?
...pplying these changes to sub-objects created subsequently.
.
ADDENDUM (2019/02/10) -
The Windows 10 command line above was kindly suggested to me today, so here it is. I haven't got Windows 10 to test it, but please try it out if you have (and then will you please post a comment below).
The ch...
How to set versionName in APK filename using gradle?
...owing Android Gradle Plugin Versions:
3.6.4 (August 2020)
3.5.2 (November 2019)
3.3.0 (January 2019)
3.1.0 (March 2018)
3.0.1 (November 2017)
3.0.0 (October 2017)
2.3.2 (May 2017)
2.3.1 (April 2017)
2.3.0 (February 2017)
2.2.3 (December 2016)
2.2.2
2.2.0 (September 2016)
2.1.3 (August 2016)
2.1.2
2...
Path to MSBuild
... Build Tools installations.)
It only took over two years but finally in 2019, Microsoft has listened and given us a way to find these vital executables! If you have Visual Studio 2017 and/or 2019 installed, the vswhere utility can be queried for the location of MSBuild et al. Since vswhere is alw...
Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
... 然而，手工地选取特征是一件非常费力、启发式（需要专业知识）的方法，能不能选取好很大程度上靠经验和运气，而且它的调节需要大量的时间。既然手工选取特征不太好，那么能不能自动地学习一些特征呢？答案是能！Dee...
Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
... 然而，手工地选取特征是一件非常费力、启发式（需要专业知识）的方法，能不能选取好很大程度上靠经验和运气，而且它的调节需要大量的时间。既然手工选取特征不太好，那么能不能自动地学习一些特征呢？答案是能！Dee...