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Too many 'if' statements?
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@JoeHarper "Theoretically" is one thing, "practically" is another. Of course I try to use descriptive naming (with the exception of the i/j/k convention for loop variables), named constants, arranging my code in a readable fashion, etc., but when...
Serialize an object to string
...(T) in XmlSerializer constructor: if you use the first one the code covers all possible subclasses of T (which are valid for the method), while using the latter one will fail when passing a type derived from T.
Here is a link with some example code that motivate this statement, with XmlSerializ...
Magic number in boost::hash_combine
The boost::hash_combine template function takes a reference to a hash (called seed ) and an object v . According to the docs , it combines seed with the hash of v by
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jQuery counting elements by class - what is the best way to implement this?
What I'm trying to do is to count all of the elements in the current page with the same class and then I'm going to use it to be added onto a name for an input form. Basically I'm allowing users to click on a <span> and then by doing so add another one for more of the same type of items. But...
CSS disable text selection
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You could also disable user select on all elements:
* {
-webkit-touch-callout:none;
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
user-select:none;
}
And than enable it on the elements you do want the user to be abl...
Java generics type erasure: when and what happens?
...tring>. But objects don't just appear from nowhere. They are created locally, passed in as a method invocation argument, returned as the return value from a method call, or read from a field of some object... In all these cases you CAN know at runtime what the generic type is, either implicitly ...
Handler vs AsyncTask vs Thread [closed]
...so supports reporting progress of the running tasks.
And a Thread is basically the core element of multithreading which a developer can use with the following disadvantage:
If you use Java threads you have to handle the following requirements
in your own code:
Synchronization with the...
Does MySQL ignore null values on unique constraints?
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Yes, MySQL allows multiple NULLs in a column with a unique constraint.
CREATE TABLE table1 (x INT NULL UNIQUE);
INSERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'x'
INSERT table1 VALUES (NULL);
INSER...
Get selected option from select element
...ted elements use
$("select option:selected").length
To Get the value of all selected elements use
var str = "";
$("select option:selected").each(function () {
str += $(this).text() + " ";
});
share
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JavaScript validation for empty input field
I have this input field
<input name="question"/> I want to call IsEmpty function when submit clicking submit button.
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