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How can I add a hint text to WPF textbox?
...nt="Please enter your text" not 20 elements... Alas, this is not supported by the legendary built in text box...
– Mzn
Nov 29 '14 at 12:54
8
...
What are C++ functors and their uses?
...d our functor instance. I could create another adder, which added 27, just by calling the constructor with a different value. This makes them nicely customizable.
As the last lines show, you often pass functors as arguments to other functions such as std::transform or the other standard library alg...
JavaScript ternary operator example with functions
... meaning
if(expression) //longer blocks but organized and can be grasped by humans
{
//35 lines of code here
}
else if (something_else)
{
//40 more lines here
}
else if (another_one) /etc, etc
{
...
Less good:
this > that ? testFucntion() ? thirdFunction() ? imlost() : whathappu...
LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
...
I was able to resolve this by adding the class generic type constraint to the extension method. I'm not sure why it works, though.
public static T GetById<T>(this IQueryable<T> collection, Guid id)
where T : class, IEntity
{
//...
...
How do I print a double value without scientific notation using Java?
...ic notations if double is less than 10^-3 or greater than or equal to 10^7
By using %f, the default decimal precision is 6, otherwise you can hardcode it, but it results in extra zeros added if you have fewer decimals. Example:
double myValue = 0.00000021d;
String.format("%.12f", myvalue); // Outpu...
When should one use final for method parameters and local variables?
...bsess over:
Final fields - Marking fields as final forces them to be set by end of construction, making that field reference immutable. This allows safe publication of fields and can avoid the need for synchronization on later reads. (Note that for an object reference, only the field reference i...
Python JSON serialize a Decimal object
...ps(Decimal('3.9'), use_decimal=True)
'3.9'
Note that use_decimal is True by default:
def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
allow_nan=True, cls=None, indent=None, separators=None,
encoding='utf-8', default=None, use_decimal=True,
namedtuple_as_object=Tr...
How do I detect that an iOS app is running on a jailbroken phone?
...
It depends what you mean by jailbreak. In the simple case, you should be able to see if Cydia is installed and go by that - something like
NSString *filePath = @"/Applications/Cydia.app";
if ([[NSFileManager defaultManager] fileExistsAtPath:filePat...
What is a daemon thread in Java?
... setDamon(boolean) can only be called before the thread has been started. By default the thread inherits the daemon status of its parent thread.
– Gray
Nov 30 '11 at 13:47
1
...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...Update 10).
Edited 2011-04-06:
The world turns, and Java is now managed by Oracle, which bought Sun. Later this year, the sun.com domain is supposed to go dark. The new page (based on a redirect) is this Java page at the Oracle Tech Network. (See also java.com.)
Edited 2013-01-11: And the w...