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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
...uot;, BLERead | BLEWrite );
int incom = 0;
int r, g, b ;
void setup() {
Serial.begin(9600);
// set Light pin to output mode
// set advertised local name and service UUID:
blePeripheral.setLocalName("ControlLED");
bleP...
rsync: how can I configure it to create target directory on server?
I would like to rsync from local computer to server. On a directory that does not exist, and I want rsync to create that directory on the server first.
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Is it better to use std::memcpy() or std::copy() in terms to performance?
...some sort of OS activity going on. I decided to start over.
Same compiler settings and flags. There is only one version of MD5, and it's faster than SHA-2, so I did 3000 loops on a similar set of 5 test strings.
These are my final 10 results:
Time (in seconds) to complete run of MD5 tests
std::c...
How do I run a program with commandline arguments using GDB within a Bash script?
...king on your machine (i.e. on Solaris 8), you may start gdb like
gdb -ex "set args <arg 1> <arg 2> ... <arg n>"
And you can combine this with inputting a file to stdin and "running immediatelly":
gdb -ex "set args <arg 1> <arg 2> ... <arg n> < <input fil...
Share application “link” in Android
... Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "My application name");
String shareMessage= "\nLet me recommend you this application\n\n";
shareMessage = shareMessage + "https://play.google.com/...
Converting String to “Character” array in Java
...method in this case. Use a loop and get each character using charAt(i) and set it to your Character[] array using arrayname[i] = string.charAt[i].
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Getting the current page
... current page. You can calculate it with:
int page = scrollView.contentOffset.x / scrollView.frame.size.width;
If you want to round up or down to the nearest page, use:
CGFloat width = scrollView.frame.size.width;
NSInteger page = (scrollView.contentOffset.x + (0.5f * width)) / width;
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PHP Function with Optional Parameters
...gt; $param2
);
function func($required, $requiredTwo, $optional) {
if(isset($optional["param2"])) {
doWork();
}
}
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Is it possible to change only the alpha of a rgba background colour on hover?
I have a set of <a> tags with differing rgba background colours but the same alpha. Is it possible to write a single css style that will change only the opacity of the rgba attribute?
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Update all objects in a collection using LINQ
Is there a way to do the following using LINQ?
16 Answers
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