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C++17 Thanks to int std::uncaught_exceptions(), we can implement action which executes only on failure (thrown exception in scope). Previously bool std::uncaught_exception() just allows to detect if any stack unwinding is running. #include <exception> #include <iostream> template ...

As always, you need to make sure you have the required permissions. public class MainActivity extends AppCompatActivity implements LocationListener{ private LocationManager mLocationManager = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCr...

As always, you need to make sure you have the required permissions. public class MainActivity extends AppCompatActivity implements LocationListener{ private LocationManager mLocationManager = null; HandlerThread mLocationHandlerThread = null; Looper mLocationHandlerLooper = null; ...

As the characters/digits can be anywhere within the string, we require lookaheads. Lookaheads are of zero width meaning they do not consume any string. In simple words the position of checking resets to the original position after each condition of lookahead is met. Assumption :- Considering non-wo...

This can be done with a bit of modification in the above regex ^(?=.{10,}$)(?=(?:.*?[A-Z]){2})(?=.*?[a-z])(?=(?:.*?[0-9]){2}).*$ or ^(?=.{10,}$)(?=(?:.*[A-Z]){2})(?=.*[a-z])(?=(?:.*[0-9]){2}).* Let's see how a simple regex ^(?=(?:.*?[A-Z]){2}) works on string abcAdefD Image Credit :- ht...

In the solver file, we can set a global regularization loss using the weight_decay and regularization_type options. In many cases we want different weight decay rates for different layers. This can be done by setting the decay_mult option for each layer in the network definition file, where decay_...

To undo something you just did: C-_ or C-x u or C-/

C++17 The [[nodiscard]] attribute can be used to indicate that the return value of a function shouldn't be ignored when you do a function call. If the return value is ignored, the compiler should give a warning on this. The attribute can be added to: A function definition A type Adding the a...

Use parentheses and commas to create tuples. Use one comma to create a pair. (1, 2) Use more commas to create tuples with more components. (1, 2, 3) (1, 2, 3, 4) Note that it is also possible to declare tuples using in their unsugared form. (,) 1 2 -- equivalent to (1,2) (,,) 1 2 3 ...

Pattern matching on tuples uses the tuple constructors. To match a pair for example, we'd use the (,) constructor: myFunction1 (a, b) = ... We use more commas to match tuples with more components: myFunction2 (a, b, c) = ... myFunction3 (a, b, c, d) = ... Tuple patterns can contain comple...

Use the fst and snd functions (from Prelude or Data.Tuple) to extract the first and second component of pairs. fst (1, 2) -- evaluates to 1 snd (1, 2) -- evaluates to 2 Or use pattern matching. case (1, 2) of (result, _) => result -- evaluates to 1 case (1, 2) of (_, result) => resu...

Use the uncurry function (from Prelude or Data.Tuple) to convert a binary function to a function on tuples. uncurry (+) (1, 2) -- computes 3 uncurry map (negate, [1, 2, 3]) -- computes [-1, -2, -3] uncurry uncurry ((+), (1, 2)) -- computes 3 map (uncurry (+)) [(1, 2), (3, 4), (5, 6)] -- co...

Use the curry function (from Prelude or Data.Tuple) to convert a function that takes tuples to a function that takes two arguments. curry fst 1 2 -- computes 1 curry snd 1 2 -- computes 2 curry (uncurry f) -- computes the same as f import Data.Tuple (swap) curry swap 1 2 -- computes (2, 1...

Use swap (from Data.Tuple) to swap the components of a pair. import Data.Tuple (swap) swap (1, 2) -- evaluates to (2, 1) Or use pattern matching. case (1, 2) of (x, y) => (y, x) -- evaluates to (2, 1)

Android Activity package com.example.myapp; import android.os.Bundle; import android.app.Activity; import android.webkit.WebView; public class WebViewActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceSta...

Basic Example package com.example.myapp; import android.os.Bundle; import android.app.Activity; import android.webkit.WebView; public class WebViewActivity extends Activity { private Webview webView; @Override protected void onCreate(Bundle savedInstanceState) { ...

A. The syntax is presented above. The following selector matches all <input> elements in an HTML document that are not disabled and don't have the class .example: HTML: <form> Phone: <input type="tel" class="example"> E-mail: <input type="em...

The :only-child CSS pseudo-class represents any element which is the only child of its parent. HTML: <div> <p>This paragraph is the only child of the div, it will have the color blue</p> </div> <div> <p>This paragraph is one of the two children of the ...

Caffe has a build-in input layer tailored for image classification tasks (i.e., single integer label per input image). This input "Data" layer is built upon an lmdb or leveldb data structure. In order to use "Data" layer one has to construct the data structure with all training d...

Using comments in your projects is a handy way of leaving explanations of your design choices, and should aim to make your (or someone else's) life easier when maintaining or adding to the code. There are a two ways of adding a comment to your code. Single line comments Any text placed after // w...