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【解决】Error 515: Not connected to a Bluetooth device. - 创客硬件开发...
Error 515: Not connected to a Bluetooth device.
原因：经典蓝牙设备未正常连接上，就进行数据收发操作导致的异常，加一个连接状态判断就行。
IIS Express gives Access Denied error when debugging ASP.NET MVC
... Express as the web server when developing. When I try to debug, I get the error message below.
15 Answers
...
Cannot add or update a child row: a foreign key constraint fails
...
You're getting this error because you're trying to add/update a row to table2 that does not have a valid value for the UserID field based on the values currently stored in table1. If you post some more code I can help you diagnose the specific c...
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...
Running rvm rubygems latest resulted in an error complaining about missing checksums. However, things started working without that too... apparently you could force it with --verify-downloads 1 if you needed to. Any ideas why that might be? It tried to retrieve versio...
Access is denied when attaching a database
... Running Management Studio as administrator did NOT work for me. This error occurs when attempting to start the windows service.
– nuzzolilo
Dec 10 '13 at 19:58
9
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How to split a string and assign it to variables
...thon style split ...
package main
import (
"fmt"
"strings"
"errors"
)
type PyString string
func main() {
var py PyString
py = "127.0.0.1:5432"
ip, port , err := py.Split(":") // Python Style
fmt.Println(ip, port, err)
}
func (py PyString) Split(str string) ( s...
AngularJS: Basic example to use authentication in Single Page Application
...ction($rootScope, $q, Session, AUTH_EVENTS) {
return {
responseError : function(response) {
$rootScope.$broadcast({
401 : AUTH_EVENTS.notAuthenticated,
403 : AUTH_EVENTS.notAuthorized,
419 : AUTH_EVENTS.sessionTimeout,
...
How does the compilation/linking process work?
...ler where each line came from so that it can use those to produce sensible error messages.
Some errors can be produced at this stage with clever use of the #if and #error directives.
Compilation
The compilation step is performed on each output of the preprocessor. The compiler parses the pure C++...
Execution failed app:processDebugResources Android Studio
...developer but it seems that we can't get it to work flawlessly. I got this error after pulling the changes from him:
34 Ans...
Should flux stores, or actions (or both) touch external services?
...omises, but you can use Node-style
// callbacks or whatever you want for error handling.
SomeDataAccessLayer.doSomething(userId)
.then(function(newData) {
// Stores that optimistically updated may not do anything
// with a "SUCCESS" action, but you might e.g. stop showing
// a load...