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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...示values数据是否是有符号的数值（假表示无符号）serviceUuid - 服务UUID，通俗来讲它就是硬件的唯一身份IDcharacteristicUuid - 特性UUID，通俗来讲它是硬件中某一功能的唯一身份ID
一个硬件UUID示例如下：UUID分为标准UUID和厂商自定义...
Is gcc std::unordered_map implementation slow? If so - why?
...correctly, unordered_map defaults to (smallest prime larger than) 100.
I didn't have chrono on my system, so I timed with times().
template <typename TEST>
void time_test (TEST t, const char *m) {
struct tms start;
struct tms finish;
long ticks_per_second;
times(&start);...
How to name variables on the fly?
...
Is there any reason why you didn't use paste0?
– BroVic
Jul 5 '18 at 15:11
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show 1 more comme...
Django: “projects” vs “apps”
...complex "product" I'm getting ready to build using Django. I'm going to avoid using the terms "project" and "application" in this context, because I'm not clear on their specific meaning in Django.
...
What is the difference between ? and Object in Java generics?
...d that accepts maps from Strings to anything: If you would write
public void foobar(Map<String, Object> ms) {
...
}
you can't supply a HashMap<String, String>. If you write
public void foobar(Map<String, ?> ms) {
...
}
it works!
A thing sometimes misunderstood in Jav...
How to include (source) R script in other scripts
...om where (this is not the case when using packages). Yet, you may use same idea as in C .h files, i.e. wrap the whole in:
if(!exists('util_R')){
util_R<-T
#Code
}
share
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improve this answe...
GIT merge error “commit is not possible because you have unmerged files”
... and tried to push, I got the error push is not possible, at that point I did a "git pull" which made some files with conflict highlighted. I removed the conflicts but I don't know what to do from here..
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Why can't code inside unit tests find bundle resources?
... 'run' I need a resource from the main bundle and not the test bundle. Any idea?
– Chris
Jul 27 '12 at 7:48
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Can Java 8 code be compiled to run on Java 7 JVM?
...ava 8 features in the code I write for quite some time, since I want to avoid people having to upgrade their local Java installation.
– JesperE
Aug 15 '14 at 10:05
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Proper SCSS Asset Structure in Rails
...clude this sheet somewhere in your css imports, it will then not only override the browser default styles, but also any styles defined in all css files that were loaded before it. This goes the same for variables and mixins.
After seeing a presentation by Roy Tomeij at Euruko2012 I decided for the ...