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多媒体组件 · App Inventor 2 中文网
...要 Android 4.4 或更高版本、iOS 11 或更高版本。要求AI伴侣v2.68及以上。
属性
操作
设置 文件选择器 所需的操作。有如下选项：
选择现有文件：打开现有文件
选择目录：打开现有目录
选择新文件：创建一个...
Scrollview vertical and horizontal in android
...I reimplemented fillViewport and onMeasure exactly like ScrollView source (v2.1). I also changed the two first constructor with : this( context, null ); and this(context, attrs, R.attr.scrollViewStyle);. With that, I can use scrollbar using setVerticalScrollBarEnabled and setHorizontalScrollBarEnabl...
Proper MIME type for OTF fonts
...e to MIME types of font/XXX, as backed by the W3C in its proposal for WOFF v2. This is being tracked by the Internet Engineering Task Force (IETF) under The font Top Level Type and in February 2017 was approved RFC status (see RFC 8081) so it may all change yet!
While on the topic of web servers, i...
Enabling HTTPS on express.js
....NODE_ENV == 'production') {
local.ssl = {
secureProtocol: 'SSLv23_method',
secureOptions: require('constants').SSL_OP_NO_SSLv3,
ca: require('fs').readFileSync(__dirname + '/path/to/ca.crt','ascii'),
key: require('fs').readFileSync(__dirname + '/path/to/jsbot.key'...
What's the difference between dependencies, devDependencies and peerDependencies in npm package.json
... |
+- dependency3 v2.0/
Plugins, however, are packages that normally don't require the other package, which is called the host in this context. Instead:
plugins are required by the host
plugins offer a standard interface that the host expe...
windows service vs scheduled task
...itional accounts LocalService and NetworkService are available in schtasks v2 Vista onwards and should be preferred where possible. At the time, this referred to the schtasks in XP and Server 2003 which only accept the System as the parameter per the old version manual technet.microsoft.com/en-us/li...
Fastest way to replace NAs in a large data.table
...d Ramnath's answers.
require(data.table) # v1.6.6
require(gdata) # v2.8.2
set.seed(1)
dt1 = create_dt(2e5, 200, 0.1)
dim(dt1)
[1] 200000 200 # more columns than Ramnath's answer which had 5 not 200
f_andrie = function(dt) remove_na(dt)
f_gdata = function(dt, un = 0) gdata::NAToUnkno...
Google maps API V3 - multiple markers on exact same spot
...
@Ignatius most excellent answer, updated to work with v2.0.7 of MarkerClustererPlus.
Add a prototype click method in the MarkerClusterer class, like so - we will override this later in the map initialize() function:
// BEGIN MODIFICATION (around line 715)
MarkerClusterer.prot...
LISTAGG in Oracle to return distinct values
... ','([^,]+)(,\1)+', '\1')
-> 2 ,2.1,3,4 Success - fixed length items
V2 -items contained within items eg. 2,21
regexp_replace('2.1,1','([^,]+)(,\1)+', '\1')
-> 2.1 Fail
regexp_replace('2 ,2 ,2.1,1 ,3 ,4 ,4 ','(^|,)(.+)(,\2)+', '\1\2')
-> 2 ,2.1,1 ,3 ,4 -- success - NEW regex
regexp_r...
What are the differences between json and simplejson Python modules?
...
It seems the Python2.7 json adopted simplejson v2.0.9 which is far behind the current simplejson v3.6.5 as of writing. There are lots of improvements worth the import simplejson
– Kenji Noguchi
Nov 11 '14 at 19:30
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