How can I determine which device is running?
My app runs well on Windows, Linux and OSX. but doesn't on CrOS(Chromebook).
So I'd like to sperate code like a..
> if (chrome.systemInfo.platform == CrOS) {
> // code only for CrOs }
Is there anyway to do this way? anyway to get the information of platform?
ChromeOS has the navigator.userAgent of "CrOS". So the base on the fact, you could have a conditional statement like...:
if (navigator.userAgent.indexOf('CrOS') != -1) {
console.log('ChromeOS');
} else {
console.log('Other platform');
}
Related
I have a problem executing 64-bit version of my program:
_XMLDoc = new TBasicXML(_owner);
try {
_XMLDoc->LoadFromFile(_filePath);
}
catch (...) {
delete _XMLDoc;
return "?";
}
In 32-bit version, when _filePath does not exist, program goes into catch block,
but in 64-bit version it does not.
Actually, it throws EDOMParseError several times and it enters catch block after I press continue for each error dialog.
TBasicXML class constructor is:
__fastcall TBasicXML::TBasicXML(TComponent *Owner, UnicodeString encoding)
{
_doc = new TXMLDocument(Owner);
_doc->Active = true;
_doc->Encoding = encoding;
_doc->Options = TXMLDocOptions()<<doNodeAutoIndent;
}
Is there something specifically I need to specify in project options for Win 64 target that defers from 32-bit target, to avoid such behavior?
Edit: I was focused on this part of code (parser), because it's executed at the program start. However, I've added this peace of code in my main form's constructor, before parser call:
int x;
try {
x = StrToInt("not a number");
}
catch (...) {
MessageDlg("Exception catched!", mtInformation, TMsgDlgButtons() << mbOK, 0);
}
I've built 64-bit release version and started the program (Run without debugger). It simply aborts without any message. When the same program (release) is started with debugger (Run (F9)) it shows error message dialog (EConverterError) and then after continue is pressed it shows my MessageDlg.
Note: with 32-bit version, there is no problem at all.
Edit2: I've test some other projects, the same situation:
__fastcall TfrmMain::TfrmMain(TComponent* Owner)
: TForm(Owner)
{
// test
int x;
try {
x = StrToInt("not a number");
}
catch (...) {
MessageDlg("Exception catched!", mtInformation, TMsgDlgButtons() << mbOK, 0);
}
//Ie settings
IEGlobalSettings()->AutoFragmentBitmap = false;
IEGlobalSettings()->MsgLanguage = msEnglish;
IEGlobalSettings()->EnableTheming = true;
// initialize spengine
speInit(); // delayed DLL load
FLeftId = 0;
FRightId = 0;
}
Again, 64-bit release version, when started from IDE, without debugger, silently terminates program, when started with debugger, works normally.
Edit3: Now, here is a mystery?
From the example above, I've excluded DLL library (spEngine.a) from build and commented all code related to DLL entry calls and try-catch block works as usual. When spEngine.a is included, no matter if DLL loading (spEngine.dll) is delayed or not and without any call to DLL entries, try-catch block woks as previously described. Very strange. spEngine.dll calls custom Intel's ipp DLL build with MVSC2017. The similar try-catch behavior I have experienced with another library that calls OpenCV DLLs (wrapper built with MSVC2017). The complete source code is here: https://github.com/spetric/Lips
Note: 64-bit host application works well, no problems with functionality, only with strange try-catch block behavior.
Hi I am writing a simple console app that needs to write bytes to MCP2210 USB to SPI Master
I found this library over here, seems to do good job with connecting the device and reading the metadata.
I am writing message to the board as below
public static byte[] Talk()
{
var device = DeviceList.Local.GetHidDevices(1240, 222).FirstOrDefault();
if (device == null)
{
Console.WriteLine($"Could not find a device with Vendor Id:1240, Product Id:222 ");
return null;
}
var reportDescriptor = device.GetReportDescriptor();
foreach (var deviceItem in reportDescriptor.DeviceItems)
{
Console.WriteLine("Opening device for 20 seconds...");
if (!device.TryOpen(out var hidStream))
{
Console.WriteLine("Failed to open device.");
continue;
}
Console.WriteLine("Opened device.");
hidStream.ReadTimeout = Timeout.Infinite;
hidStream.Write(new byte[3] {60, 00, 00});
}
Not sure If I am writing it correctly.
While writing I need to do a chip selection as displayed in this other terminal
Any help is greatly appreciated
Here is the MC I am using https://www.microchip.com/wwwproducts/en/MCP2210
I do not see a closing of your stream. This may cause your data to not even being sent (at least not in time).
Consider using blocks with streams.
But with out parameters not possible.
I know I might be facing an impossible mission. What I do want is radiusd to write down every mac received in an Acces-Request, for later on deny access to those MAC.
I know the policies file is written in unlang, bad news are that radiusd does not have any write permissions on any of the conf files...
Anyway, was anyone capable of WRITTING to a file in the POLICY PROCESSING of FreeRADIUS?
What I want to achieve would be something like this:
raddb/sites-available/default
authorize {
rewrite_calling_station_id
unauthorized_macs
if(ok) {
reject
}
else {
update control {
Auth-Type := Accept
}
GET MAC FROM CALLIN_STATION_ID ATTRIBUTE
WRITE THIS F***ING MAC TO unauthorized_macs FILE
}
}
Thanks to Arran, I could solve this the following way:
authorize {
rewrite_calling_station_id
authMac
if(ok) {
reject
}
else {
linelog
update control {
Auth-Type := Accept
}
}
}
Where linelog is configured as follows:
raddb/mods-enabled/linelog
linelog {
filename = /path/to/hell/authMac
format = "%{Calling-Station-ID}"
}
update request {
Tmp-String-0 := `echo "%{Calling-Station-ID}" >> "/path/to/f___ing_unauthorized_macs_file"`
}
There's also the linelog module which would be better in >= v3.0.x as it implements internal locking (in addition to flock) to prevent line interleaving.
See /etc/raddb/mods-available/linelog for examples.
I'm attempting to use JESS in order to utilise a rule-based system for making a robot. I've got both robocode and the JESS .jar imported into Eclipse. Here's my code -
public class myRobot extends Robot {
Rete r = new Rete();
public void run() {
try {
String reset = "(reset)";
r.executeCommand(reset);
String enemyInfo = "(deftemplate enemyInfo (slot present) (slot energy) (slot name))";
r.executeCommand(enemyInfo);
while (true) {
String command = "(assert (enemyInfo (present no) (energy -1) (name none)))";
r.executeCommand(command);
}
} catch (JessException ex) {
System.err.println(ex);
}
}
public void onScannedRobot(ScannedRobotEvent e) {
try {
String command = "(assert (enemyInfo (present yes) (energy " + e.getEnergy() + ") (name " + e.getName() + ")))";
r.executeCommand(command);
} catch (JessException ex) {
System.err.println(ex);
}
}
}
I haven't added in any rules yet because I just wanted to check that robocode and JESS run properly together. When I fire this up, the robocode application opens up. But when I try adding this robot in a battle and starting it, the application just freezes up completely.
I can't access the robot's console to see what's wrong since it hangs just immediately after I try and start a battle. Since all my System.out.println() debugging statements are printed to the robot's console as opposed to the main one, I can't even figure out what's wrong. Any suggestions to get this to work?
The problem is, that the robocode application does not know the JESS library. You will need to include it in the jar of your exported robot.
How to include librarys to jars
I'm working on a GWT application and would like to branch some logic based on whether the code is running in development mode or is live in production.
For example, when the code needs to make an AJAX call we would like to set the URL depending on mode.
GWT >= 2.1.0
boolean isDevelopmentMode() {
return !GWT.isProdMode() && GWT.isClient();
}
GWT < 2.1.0
boolean isDevelopmentMode() {
return !GWT.isScript() && GWT.isClient();
}
boolean isProductionMode() {
return GWT.isScript();
}
boolean isDevelopmentMode() {
return !GWT.isScript() && GWT.isClient();
}
// e.g. JUnit tests
boolean isPlainJVM() {
return !GWT.isClient();
}