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Is optimisation level -O3 dangerous in g++?
...you want to take optimization into the extreme, you can tweak in gcc via --param the costs associated with certain optimizations. Additionally note that gcc now has the ability to put attributes at functions that control optimization settings just for these functions, so when you find you have a pro...
Limit Decimal Places in Android EditText
...{
private final int decimalDigits;
/**
* Constructor.
*
* @param decimalDigits maximum decimal digits
*/
public DecimalDigitsInputFilter(int decimalDigits) {
this.decimalDigits = decimalDigits;
}
@Override
public CharSequence filter(CharSequence source,
int star...
Check if Internet Connection Exists with Javascript? [duplicate]
...TP" );
// Open new request as a HEAD to the root hostname with a random param to bust the cache
xhr.open( "HEAD", "//" + window.location.hostname + "/?rand=" + Math.floor((1 + Math.random()) * 0x10000), false );
// Issue request and handle response
try {
xhr.send();
return ( xhr.st...
Android 4.2: back stack behaviour with nested fragments
...ragment, or previously added as part of this transaction.</p>
*
* @param fragment the fragment to set as the primary navigation fragment
* @return the same FragmentTransaction instance
*/
public abstract FragmentTransaction setPrimaryNavigationFragment(Fragment fragment);
You have to set...
How would you implement an LRU cache in Java?
...* <code>LinkedHashMap</code>.
* </p>
*
* @param eldest
* the <code>Entry</code> in question; this implementation doesn't care what it is, since the
* implementation is only dependent on the size of the cache
* @return ...
Hibernate, @SequenceGenerator and allocationSize
...T_PK_SEQ",
strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator",
parameters = {
@org.hibernate.annotations.Parameter(
name = "optimizer", value = "pooled-lo"),
@org.hibernate.annotations.Parameter(
name = "initial_value", value = "1"),
...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
... { a: true, b: false, c: nil}
#
# This is useful for limiting a set of parameters to everything but a few known toggles:
# @person.update(params[:person].except(:admin))
def except(*keys)
dup.except!(*keys)
end
# Replaces the hash without the given keys.
# hash = { a: true, b:...
What does inverse_of do? What SQL does it generate?
...seful. You can still generate a User @user with his association @user.role(params[:role_id]) so that saving the user would not result in a failing validation of the Assignment model.
share
|
improve...
How to declare or mark a Java method as deprecated?
...were missing
Use @Deprecated annotation on the method like this
/**
* @param basePrice
*
* @deprecated reason this method is deprecated <br/>
* {will be removed in next version} <br/>
* use {@link #setPurchasePrice()} instead like this:
*
*
* <...
Shortcut for creating single item list in C#
... chaining.
public static List<T> WithItems(this List<T> list, params T[] items)
{
list.AddRange(items);
return list;
}
This would let you do this:
List<string> strings = new List<string>().WithItems("Yes");
or
List<string> strings = new List<string>...