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Is a Java hashmap search really O(1)?
... 2 = (n / capacity)2
This is much lower. Since the cost of handling one extra collision is irrelevant to Big O performance, we've found a way to improve performance without actually changing the algorithm! We can generalzie this to
pcollision x k = (n / capacity)k
And now we can disregard...
How do I delete multiple rows in Entity Framework (without foreach)
... list of IDs, use a WHERE IN ({0}), and then the second argument should be String.Join(",", idList).
– Langdon
Jul 25 '16 at 22:06
...
How do I make an HTTP request in Swift?
...onDataTask from URLSession. Then run the task with resume().
let url = URL(string: "http://www.stackoverflow.com")!
let task = URLSession.shared.dataTask(with: url) {(data, response, error) in
guard let data = data else { return }
print(String(data: data, encoding: .utf8)!)
}
task.resume()...
Getting the name of a child class in the parent class (static context)
...:
get_class($this);
and it will return the name of the child class as a string.
i.e.
class Parent() {
function __construct() {
echo 'Parent class: ' . get_class() . "\n" . 'Child class: ' . get_class($this);
}
}
class Child() {
function __construct() {
parent::const...
How to make a DIV visible and invisible with JavaScript
...
Sometimes it is acceptable to assign an empty string to show an element.
– Basilevs
Mar 17 '15 at 7:19
...
WiX tricks and tips
...sy way to include the product version in the welcome dialog title by using Strings.wxl for localization. (Credit: saschabeaumont. Added as this great tip is hidden in a comment)
<WixLocalization Culture="en-US" xmlns="http://schemas.microsoft.com/wix/2006/localization">
<String Id="Wel...
Get Value of a Edit Text field
...ew view)
{
Log.v("EditText", mEdit.getText().toString());
}
});
}
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Create objective-c class instance by name?
...
id object = [[NSClassFromString(@"NameofClass") alloc] init];
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How to bring view in front of everything?
...eight"
android:layout_alignParentTop="true"
hw:titleText="@string/app_name" >
</com.binh.helloworld.customviews.HWActionBar>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id...
Add new item count to icon on button - Android
...ate Paint mTextPaint;
private Rect mTxtRect = new Rect();
private String mCount = "";
private bool mWillDraw = false;
public CountDrawable(Context context)
{
float mTextSize = context.Resources.GetDimension(Resource.Dimension.badge_count_textsize);
mBadgePaint ...