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Sending message through WhatsApp
...at whatsapp doesn't support this, I was wondering if something had changed and if there is a way to open a whatsapp 'chat' with a number that I'm sending through an intent?
...
How do I exit a WPF application programmatically?
...n the ShutdownMode is set to OnMainWindowClose.
When a user ends a session and the SessionEnding event is either unhandled, or handled without cancellation.
Please also note that Application.Current.Shutdown(); may only be called from the thread that created the Application object, i.e. normally t...
Why use the 'ref' keyword when passing an object?
...omething else, callers of the method will need to be coded to ensure they handle this possibility.
Also, when the parameter type is an object, then object variables always act as references to the object. This means that when the ref keyword is used you've got a reference to a reference. This allows...
How can I tell jackson to ignore a property for which I don't have control over the source code?
...);
Edit:
Thanks to the comments, with Jackson 2.5+, the API has changed and should be called with objectMapper.addMixIn(Class<?> target, Class<?> mixinSource)
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Find object by id in an array of JavaScript objects
... '45').map(x => x.foo);
Side note: methods like find() or filter(), and arrow functions are not supported by older browsers (like IE), so if you want to support these browsers, you should transpile your code using Babel (with the polyfill).
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How to check if the user can go back in browser history or not
...with this is that in most browsers this is considered a security violation and usually just returns undefined.
history.length
Is a property that others have suggested...
However, the length doesn't work completely because it doesn't indicate where in the history you are. Additionally, it doesn't...
write a shell script to ssh to a remote machine and execute commands
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There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ssh, for example:
#!/bin/ba...
How to print (using cout) a number in binary form?
I'm following a college course about operating systems and we're learning how to convert from binary to hexadecimal, decimal to hexadecimal, etc. and today we just learned how signed/unsigned numbers are stored in memory using the two's complement (~number + 1).
...
Possible reasons for timeout when trying to access EC2 instance
...SSH into my instance - Operation timed out. What could be the reasons why, and what can I do to resolve it? Rebooting normally takes a long time to take effect, and might just makes things worst
...
How to implement the Android ActionBar back button?
...Selected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
The function NavUtils.navigateUpFromSam...