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Is there a fixed sized queue which removes excessive elements?
...for a queue with max 10 elements:
queue = new LinkedHashMap<Integer, String>()
{
@Override
protected boolean removeEldestEntry(Map.Entry<Integer, String> eldest)
{
return this.size() > 10;
}
};
If the "removeEldestEntry" returns true, the eldest...
What happens if you call erase() on a map element while iterating from begin to end?
...ng erase. At this point it is too late and is already invalidated.
map<string, SerialdMsg::SerialFunction_t>::iterator pm_it = port_map.begin();
while(pm_it != port_map.end())
{
if (pm_it->second == delete_this_id)
{
port_map.erase(pm_it++); // Use iterator.
...
How do I write outputs to the Log in Android?
...ery long. You can define somewhere in your class:
private static final String TAG = "myApp";
and use it when debugging
Log.v(TAG, "did something");
You can apply as well a Filter to only search for the tag.
sha...
How to wrap text using CSS? [duplicate]
...ec).
You are better off taking steps to ensure the data doesn't have long strings of non-white-space.
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Symfony2 : How to get form validation errors after binding the request to the form
...s($child);
}
}
return $errors;
}
To get all errors as a string:
$string = var_export($this->getErrorMessages($form), true);
Symfony 2.5 / 3.0:
$string = (string) $form->getErrors(true, false);
Docs:
https://github.com/symfony/symfony/blob/master/UPGRADE-2.5.md#form
h...
Enable Vim Syntax Highlighting By Default
...your $HOME as .vimrc. It switches on a lot of basic stuff for you automatically (syntax, search highlighting, backup etc). You can then tweak it based on your needs.
– oyenamit
Jun 30 '12 at 14:51
...
How to scale threads according to CPU cores?
...d run() {
// do one task
}
});
or
Future<String> future = pool.submit(new Callable<String>() {
public String call() throws Exception {
return null;
}
});
future.get(); // Will block till result available
This is a lot ...
What are all the common ways to read a file in Ruby?
... a starting point perl.com/article/21/2013/4/21/Read-an-entire-file-into-a-string
– the Tin Man
Aug 28 at 0:28
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parseInt vs unary plus, when to use which?
...lete set of cases
Well, here are a few differences I know of:
An empty string "" evaluates to a 0, while parseInt evaluates it to NaN. IMO, a blank string should be a NaN.
+'' === 0; //true
isNaN(parseInt('',10)); //true
The unary + acts more like parseFloat since it also acce...
How to copy data to clipboard in C#
How can I copy a string (e.g "hello") to the System Clipboard in C#, so next time I press CTRL+V I'll get "hello"?
5 Answ...