An Explain infront of a select query shows you how the query will be executed. This way you to see if the query uses an index or if you could optimize your query by adding an index.
Example query:
explain select * from user join data on user.test = data.fk_user;
Example result:
id select_type...
Import the CoreLocation module in your classes that use CoreLocation functionality.
//Swift
import CoreLocation
//Objective-C
#import <CoreLocation/CoreLocation.h>
Check the app's authorization status with:
//Swift
let status: CLAuthorizationStatus = CLLocationManager.authorizationStatus()
//Objective-C
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
Test the status against the follow constants:
//Swift
switch status {
case ...
The ng-mouseenter and ng-mouseleave directives are useful to run events and apply CSS styling when you hover into or out of your DOM elements.
The ng-mouseenter directive runs an expression one a mouse enter event (when the user enters his mouse pointer over the DOM element this directive resides i...
You can use the zip operator to make request in parallel and combine the results eg:
Observable.zip(api.getRepo(repoId1), api.getRepo(repoId2), (repo1, repo2) ->
{
//here you can combine the results
}).subscribe(/*do something with the result*/);
To perform elementwise multiplication on tensors, you can use either of the following:
a*b
tf.multiply(a, b)
Here is a full example of elementwise multiplication using both methods.
import tensorflow as tf
import numpy as np
# Build a graph
graph = tf.Graph()
with graph.as_default():
...
select_dtypes method can be used to select columns based on dtype.
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [1.0, 2.0, 3.0], 'C': ['a', 'b', 'c'],
'D': [True, False, True]})
In [2]: df
Out[2]:
A B C D
0 1 1.0 a True
1 2 2.0 b False
2...
This example demonstrates how to place 3 buttons in total with 2 buttons being in the first row. Then a wrap occurs, so the last button is in a new row.
The constraints are simple strings, in this case "wrap" while placing the component.
public class ShowMigLayout {
// Create the ...
Stackage is a repository for Haskell packages. We can add these packages to a stack project.
Adding lens to a project.
In a stack project, there is a file called stack.yaml. In stack.yaml there is a segment that looks like:
resolver: lts-6.8
Stackage keeps a list of packages for every revision...
To use a FloatingActionButton just add the dependency in the build.gradle file as described in the remarks section.
Then add to the layout:
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
...
Catamorphisms, or folds, model primitive recursion. cata tears down a fixpoint layer by layer, using an algebra function (or folding function) to process each layer. cata requires a Functor instance for the template type f.
cata :: Functor f => (f a -> a) -> Fix f -> a
cata f = f . fma...
Anamorphisms, or unfolds, model primitive corecursion. ana builds up a fixpoint layer by layer, using a coalgebra function (or unfolding function) to produce each new layer. ana requires a Functor instance for the template type f.
ana :: Functor f => (a -> f a) -> a -> Fix f
ana f = Fi...
For the example, lets say that we have a List of type String that contains four elements: "hello, ", "how ", "are ", "you?"
The best way to iterate over each element is by using a for-each loop:
public void printEachElement(List<String> list){
for...