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How to properly stop the Thread in Java?
... someone else which come in contact with the thread may do interrupt on it from somewhere else, causing it to stop and being very hard to debug. Always use a flag as well.
– JohnyTex
Jan 18 '16 at 8:10
...
Exception NoClassDefFoundError for CacheProvider
...
Make sure you've changed the package from hibernate3 to hibernate4 - a LocalSessionFactoryBean exists in both packages. What version of Spring and Hibernate are you using?
– Aaron Douglas
May 23 '12 at 12:30
...
C# Lambda expressions: Why should I use them?
...ssion<T> parameter and the compiler will generate an expression tree from a lambda instead of an anonymous delegate:
void Example(Predicate<int> aDelegate);
called like:
Example(x => x > 5);
becomes:
void Example(Expression<Predicate<int>> expressionTree);
The ...
Best way to generate random file names in Python
...f uniform length can be generated by using MD5 hashes of the current time:
from hashlib import md5
from time import localtime
def add_prefix(filename):
prefix = md5(str(localtime()).encode('utf-8')).hexdigest()
return f"{prefix}_{filename}"
Calls to the add_prefix('style.css') generates se...
How to convert a string to an integer in JavaScript?
...s octal number, and will return number 8. So, you need to specify a radix (from 2 to 36). In this case base 10.
parseInt(string, radix)
Example:
var result = parseInt("010", 10) == 10; // Returns true
var result = parseInt("010") == 10; // Returns false
Note that parseInt ignores bad data aft...
How to implement the Android ActionBar back button?
...ItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
The function NavUtils.navigateUpFromSameTask(this) requires you to define the parent acti...
Wait until all jQuery Ajax requests are done?
...ajax1() {
// NOTE: This function must return the value
// from calling the $.ajax() method.
return $.ajax({
url: "someUrl",
dataType: "json",
data: yourJsonData,
...
});
}
In my opinion, it makes for a clean and clear syntax, an...
How do I print a double value with full precision using cout?
...ouble>::digits10 + 2) because 2 extra digits are needed when converting from decimal back to the binary representation to ensure the value is rounded to the same original value. Here is a paper with some details: docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html
– Mike...
Can I use if (pointer) instead of if (pointer != NULL)?
...verted into boolean false while non-null pointers are converted into true. From the C++11 standard, section on Boolean Conversions:
A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can be converted to a
prvalue of type
bool. A zero value, null pointer value, ...
Loadbalancing web sockets
...
So I would load my javascript library from the load balancer URL and give the load balancer URL when I create the web socket in javascript - you mean it is transparent to the browser? That is cool!
– John Smith
Sep 21 '12 a...