Tutorial by Examples: me

_id is a 12 bytes hexadecimal number which assures the uniqueness of every document. You can provide _id while inserting the document. If you didn't provide then MongoDB provide a unique id for every document. These 12 bytes first 4 bytes for the current timestamp, next 3 bytes for machine id, next ...

Install properties reader: npm install properties-reader --save Create a directory env to store your properties files: mkdir env Create environments.js: process.argv.forEach(function (val, index, array) { var arg = val.split("="); if (arg.length > 0) { ...

The following are some of the common extensions used in Fortran source files and the functionalities they can work on. Lowercase f in the extension These files do not have the features of preprocessor directives similar to C-programming language. They can be directly compiled to create object file...

In this example, a sine curve and a cosine curve are plotted in the same figure by superimposing the plots on top of each other. # Plotting tutorials in Python # Adding Multiple plots by superimposition # Good for plots sharing similar x, y limits # Using single plot command and legend import...

Similar to the previous example, here, a sine and a cosine curve are plotted on the same figure using separate plot commands. This is more Pythonic and can be used to get separate handles for each plot. # Plotting tutorials in Python # Adding Multiple plots by superimposition # Good for plots sha...

Because Node.js runs on a single process uncaught exceptions are an issue to be aware of when developing applications. Silently Handling Exceptions Most of the people let node.js server(s) silently swallow up the errors. Silently handling the exception process.on('uncaughtException', functio...

The problem statement is like if we are given two string str1 and str2 then how many minimum number of operations can be performed on the str1 that it gets converted to str2.The Operations can be: Insert Remove Replace For Example Input: str1 = "geek", str2 = "gesek" Ou...

Almost usually things are a little bit more complex and to support scalability we should split things apart. So we can define various files containing different resources dictionaries, i.e. resources for UI controls' themes, resources for texts and so on, then we merge them all together in App.xaml ...

This method extends the jQuery prototype ($.fn) object to provide new custom methods that can be chained to the jQuery() function. For example: <div>Hello</div> <div>World!</div> <script> jQuery.fn.extend({ // returns combination of div texts as a result g...

You can define the layer parameters in the prototxt by using param_str. Once you've done it, here is an example on how you access these paremeters inside the layer class: def setup(self, bottom, top): params = eval(self.param_str) param1 = params["param1"] param2 = params.g...

In this example we will design a "measure" layer, that outputs the accuracy and a confusion matrix for a binary problem during training and the accuracy, false positive rate and false negative rate during test/validation. Although Caffe already has a Accuracy layer, sometimes you want some...

unordered_map<data_type, data_type> variable_name; //declaration variable_name[key_value] = mapped_value; //inserting values variable_name.find(key_value); //returns iterator to the key value variable_name.begin(); // iterator to the first element variable_name.end(); // iterator t...

We have seen in those examples (ex_1, ex_2) how to use and override the pagination classes in any generic class base view. What happens when we want to use pagination in a function based view? Lets also assume that we want to create a function based view for MyModel with PageNumberPagination, res...

BottomSheet DialogFragment opens up in STATE_COLLAPSED by default. Which can be forced to open to STATE_EXPANDEDand take up the full device screen with help of the following code template. @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { BottomSheetDialog dialog = ...

Suppose you are creating a function that requires no arguments when it is called and you are faced with the dilemma of how you should define the parameter list in the function prototype and the function definition. You have the choice of keeping the parameter list empty for both prototype and d...

From your server request to the the link below to send the notification with some request parameters https://fcm.googleapis.com/fcm/send While requesting add headers as follows Authorization key=<Your_key_from_the_console> Content-Type application/json The body of the request v...

Array ( [0] => Array ( [id] => 13 [category_id] => 7 [name] => Leaving Of Liverpool [description] => Leaving Of Liverpool [price] => 1.00 [virtual] => 1 [active] =...

plugin.tx_news { settings { link { skipControllerAndAction = 1 } } } [globalVar = GP:tx_news_pi1|news > 0] config.defaultGetVars { tx_news_pi1 { controller=News action=detail } } [global] ...

REPORT z_template. CLASS lcl_program DEFINITION ABSTRACT FINAL. PUBLIC SECTION. CLASS-METHODS start_of_selection. CLASS-METHODS initialization. CLASS-METHODS end_of_selection. ENDCLASS. CLASS lcl_program IMPLEMENTATION. METHOD initialization. ENDMETHOD. ...

Suppose we have this file: test>>cat file 10.Gryffindor 4.Hogwarts 2.Harry 3.Dumbledore 1.The sorting hat To sort this file numerically, use sort with -n option: test>>sort -n file This should sort the file as below: 1.The sorting hat 2.Harry 3.Dumbledore 4.Hogwa...