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Pass props to parent component in React.js
...list of services (with names and prices) and it will calculate a total the selected prices.
Children are blissfully ignorant
ServiceItem is the child-component in this example. It doesn’t have many opinions about the outside world. It requires a few props, one of which is a function to be called...
Preserve Line Breaks From TextArea When Writing To MySQL
...UOTES, 'UTF-8'));
In query enter $textToStore....
step 2:
write code for select query...and direct echo values....
It works
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Is there any way to prevent input type=“number” getting negative values?
...tive number from keyboard.
Solution is to prevent with key code:
// Select your input element.
var number = document.getElementById('number');
// Listen for input event on numInput.
number.onkeydown = function(e) {
if(!((e.keyCode > 95 && e.keyCode < 106)
|| (e....
how can I add the aidl file to Android studio (from the in-app billing example)
...te new directory under src/main called aidl
Right click on directory aidl, select new->add package
Enter Name of the package com.android.vending.billing
Copy IInAppBillingService.aidl from the directory Android/Sdk/extras/google/play_billing to the directory App_name/app/src/main/aidl/com/androi...
Returning IEnumerable vs. IQueryable
...mers = custs.Where(c => c.IsGold);
That code will execute SQL to only select gold customers. The following code, on the other hand, will execute the original query in the database, then filtering out the non-gold customers in the memory:
IEnumerable<Customer> custs = ...;
// Later on...
...
How to display a Yes/No dialog box on Android?
...played). Because of this, you have to use a callback to handle the user's selection.
Check out this question for a longer discussion between the differences in Android and .NET (as it relates to dialogs):
Dialogs / AlertDialogs: How to "block execution" while dialog is up (.NET-style)
...
SQL: How to get the count of each distinct value in a column?
...
SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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Optimise PostgreSQL for fast testing
... table, manipulating it however you need to, then doing an INSERT INTO ... SELECT ... to copy it to the final table. Note that temporary tables are per-session; if your session ends or you lose your connection then the temp table goes away, and no other connection can see the contents of a session's...
Extract method to already existing interface with ReSharper
...can choose the interface that you want to add the declarations to and also select each method that you want to add to the interface.
Gotta love Resharper! ;-)
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How can we redirect a Java program console output to multiple files?
...t that dialog.
Move cursor at the end of file path.
Click variables and select string_prompt
Select Apply and Run
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