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How to implement an STL-style iterator and avoid common pitfalls?
...terator : input_iterator, output_iterator {
forward_iterator();
};
//multiple passes allowed
bidirectional_iterator : forward_iterator {
iterator& operator--(); //prefix decrement
iterator operator--(int); //postfix decrement
};
random_access_iterator : bidirectional_iterator {
...
How can I make a JPA OneToOne relation lazy
... and you're still having problems, please post your classes, query and resulting SQL for more to-the-point conversation.
B) @OneToOne is trickier. If it's definitely not nullable, go with Rob H.'s suggestion and specify it as such:
@OneToOne(optional = false, fetch = FetchType.LAZY)
Otherwise, i...
Why the switch statement cannot be applied on strings?
...ould the compiler compare 2 string values? Case sensitive, insensitive, culture aware, etc ... Without a full awareness of a string this cannot be accurately answered.
Additionally, C/C++ switch statements are typically generated as branch tables. It's not nearly as easy to generate a branch t...
Possible to iterate backwards through a foreach?
...for as much as foreach is implemented in-order, the construct itself is built for expressing loops that are independent of element indexes and iteration order, which is particularly important in parallel programming. It is my opinion that iteration relying on order should not use foreach for looping...
How to prevent column break within an element?
...void;
page-break-inside: avoid;
break-inside: avoid-column;
}
<div class='x'>
<ul>
<li>Number one, one, one, one, one</li>
<li>Number two, two, two, two, two, two, two, two, two, two, two, two</li>
<li>Number three...
Why does Math.Round(2.5) return 2 instead of 3?
...even is supposed to minimize that) (a).
Follow these links for the MSDN descriptions of:
Math.Floor, which rounds down towards negative infinity.
Math.Ceiling, which rounds up towards positive infinity.
Math.Truncate, which rounds up or down towards zero.
Math.Round, which rounds to the nearest i...
Access string.xml Resource File from Java Android Code
... arr[] = getResources().getStringArray(R.array.planet);
for (int i = 0; i < arr.length; i++) {
Toast.makeText(getBaseContext(),arr[i], Toast.LENGTH_LONG).show();
}
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PHP array_filter with arguments
...
As an alternative to @Charles's solution using closures, you can actually find an example in the comments on the documentation page. The idea is that you create an object with the desired state ($num) and the callback method (taking...
Retrieving Property name from lambda expression
... if the expression is not a property.
public PropertyInfo GetPropertyInfo<TSource, TProperty>(
TSource source,
Expression<Func<TSource, TProperty>> propertyLambda)
{
Type type = typeof(TSource);
MemberExpression member = propertyLambda.Body as MemberExpression;
...
How do you iterate through every file/directory recursively in standard C++?
... !exists( dir_path ) ) return false;
directory_iterator end_itr; // default construction yields past-the-end
for ( directory_iterator itr( dir_path );
itr != end_itr;
++itr )
{
if ( is_directory(itr->status()) )
{
if ( find_file( itr->path(), file_name, path...