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【Mixly×AI2系列·第5讲】手机发指令控制LED/舵机：蓝牙双向通信实战① - ...
... App Inventor2 接入系列》第 5 讲，完整版方案可参考同版块的系列开篇调研帖。
一、知识目标
• 理解"App → 蓝牙 → 串口 → 硬件"的指令传递链路
• 掌握 Mixly 串口读取与条件判断块
• 掌握 App Inventor2 BluetoothClient 发...
Update Item to Revision vs Revert to Revision
...opy, after you do some change, and want to commit, you will fail,TSVN will alert you to update your WC to latest revision first
If you Revert to a rev, you can commit to repository.everyone will back to the rev after they do an update.
...
Do fragments really need an empty constructor?
... .replace(R.id.content, MyFragment.newInstance(
R.string.alert_title,
"Oh no, an error occurred!")
)
.commit();
}
}
This way if detached and re-attached the object state can be stored through the arguments. Much like bundles attached to...
Use of Finalize/Dispose method in C#
...ject should ALWAYS be disposed, and if you fail to do this it's best to be alerted to the fact as early as possible.
– erikkallen
Oct 19 '09 at 10:49
97
...
Call An Asynchronous Javascript Function Synchronously
..."reading...\n";
try {
var d = yield read("read.html");
alert(d.responseText.length);
} catch (e) {
e.stack.split(/\n/).forEach(function(line) { console.log(line) });
console.log("");
out.innerHTML = "error: " + e;
}
});
function read(url, method)...
How do I set up a basic Ruby project?
...e you time and hassle by automatically running your specs as files change, alerting you to spec failures.
~/code/my_lib $ git add spec/spec_helper.rb
~/code/my_lib $ git commit -am "Add RSpec"
~/code/my_lib $ vim my_lib.gemspec # add guard development dependency
~/code/my_lib $ bundle
~/code/my_lib...
Do login forms need tokens against CSRF attacks?
...er due to incorrect password n no. of times, can be avoided.
Flase hacking alerts can be prevented. etc etc.
share
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...
How to securely save username/password (local)?
... }
MessageBox.Show("{\"data\": \"some data\"}","Login Message Alert",MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void DecryptString_Click(object sender, EventArgs e)
{
SecureString password = DecryptString(Properties.Settings.Default....
Why is it necessary to set the prototype constructor?
...;
this.favoriteColor = 'blue';
}
and at the end of the test code...
alert(student1.favoriteColor);
The color will be blue.
A change to the prototype.constructor, in my experience, doesn't do much unless you're doing very specific, very complicated things that probably aren't good practice ...
Replacing .NET WebBrowser control with a better browser, like Chrome?
... are some js problems. Everyone using it will almost immediately notice js alert does nothing. Events like mouseup,mousedown... etc. doesn't work, js drag and drop is buggy and so on..
I also had some difficulties installing it since it requires specific version of VC redistributable installed, so a...