Tutorial by Examples: f

Two main techniques allow passing data between GUI functions and Callbacks: setappdata/getappdata and guidata (read more about it). The former should be used for larger variables as it is more time efficient. The following example tests the two methods' efficiency. A GUI with a simple button is cre...

custom stuff

Download and install Code::Blocks here. If you're on Windows, be careful to select a file for which the name contains mingw, the other files don't install any compiler. Open Code::Blocks and click on "Create a new project": Select "Console application" and click &...

The first function, using an array, is much faster If called without the optional parameter, will default to .ThisWorkbook.ActiveSheet If the range is empty will returns Cell( 1, 1 ) as default, instead of Nothing Speed: GetMaxCell (Array): Duration: 0.0000790063 seconds GetMaxCell (Find ...

Deleting rows is slow, specially when looping through cells and deleting rows, one by one A different approach is using an AutoFilter to hide the rows to be deleted Copy the visible range and Paste it into a new WorkSheet Remove the initial sheet entirely With this method, th...

The procedures bellow will temporarily disable all Excel features at WorkBook and WorkSheet level FastWB() is a toggle that accepts On or Off flags FastWS() accepts an Optional WorkSheet object, or none If the ws parameter is missing it will turn all features on and off for all WorkSh...

Require is a statement that Node interprets as, in some sense, a getter function. For example, say you have a file named analysis.js, and the inside of your file looks like this, function analyzeWeather(weather_data) { console.log('Weather information for ' + weather_data.time + ': '); consol...

To create an kivy application sub class the app class Implement the build method, which will return the widget. Instantiate the class an invoke the run. from kivy.app import App from kivy.uix.label import Label class Test(App): def build(self): return Label(text='Hello worl...

Consider this example: He went into the cafe "Dostoevski" and said: "Good evening." Here we have two sets of quotes. Let's assume we want to match both, so that our regex matches at "Dostoevski" and "Good evening." At first, you could be tempted to keep...

Key Points:- Implementation of Map. stores only weak references to its keys. Weak References : The objects that are referenced only by weak references are garbage collected eagerly; the GC won’t wait until it needs memory in that case. Diffrence between Hashmap and WeakHashMap:- If the Jav...

DICOM Standard - http://dicom.nema.org/standard.html - This link contains the current, official documents. They can be downloaded or read online as web pages. DICOM Browser - https://dicom.innolitics.com/ - This link is a useful website for browsing the various DICOM information objects.

You can read all items either from any config file or type it inline. Considering if its saved in Config File // Read all list items from config file string[] countryDV = ConfigurationManager.AppSettings["countryDV"].Split(',').Select(s => s.Trim().ToUpper()).ToArray(); int DVRowLim...

Approach in this case will be different than previous example because Excel file supports the Data validation for list of items with total character count less than 256 if all items are binded directly as in previous example. But in many situation list items can be longer than 256 characters and in ...

Example shows 5 items per row: <div *ngFor="let item of items; let i = index"> <div *ngIf="i % 5 == 0" class="row"> {{ item }} <div *ngIf="i + 1 < items.length">{{ items[i + 1] }}</div> <div *ngIf="i + 2 &l...

On the shoulders of the low level drivers, there is pomm. It proposes a modular approach, data converters, listen/notify support, database inspector and much more. Assuming, Pomm has been installed using composer, here is a complete example: <?php use PommProject\Foundation\Pomm; $loader = re...

While you are not allowed to use *ngIf and *ngFor in the same div (it will gives an error in the runtime) you can nest the *ngIf in the *ngFor to get the desired behavior. Example 1: General syntax <div *ngFor="let item of items; let i = index"> <div *ngIf="<your cond...

int DVRowLimit = (Int16.MaxValue); CellRangeAddressList cellRangeFieldsType1 = new CellRangeAddressList(1, DVRowLimit, targetFirstCol, targetLastCol); XSSFDataValidationConstraint dvConstraint = (XSSFDataValidationConstraint)validationHelper.CreateDateConstraint(OperatorType.BET...

dvConstraint = (XSSFDataValidationConstraint)validationHelper.CreateTimeConstraint(OperatorType.BETWEEN, "=TIME(0,0,0)", "=TIME(23,59,59)");

string emailValidationFormula = GetEmailValidationFormula(targetFirstCol); CellRangeAddressList cellRangeFieldsType5 = new CellRangeAddressList(1, DVRowLimit, targetFirstCol, targetLastCol); dvConstraint = (XSSFDataValidationConstraint)validationHelper.CreateCustomConstraint(emailValidation...

Set SECKET_KEY, then flashing message in view function: from flask import Flask, flash, render_template app = Flask(__name__) app.secret_key = 'some_secret' @app.route('/') def index(): flash('Hello, I'm a message.') return render_template('index.html') Then render the messages...