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How can I initialize base class member variables in derived class constructor?
...ince it would destroy encapsulation. Instead, create a constructor in A to allow B (or any subclass of A) to initialize them:
class A
{
protected:
A(int a, int b) : a(a), b(b) {} // Accessible to derived classes
// Change "protected" to "public" to allow others to instantiate A.
private:
...
How to parse JSON in Scala using standard Scala classes?
... lazy val create_time: String = (json \ "create_time").extractOrElse("1970-01-01 00:00:00")
lazy val site_id: String = (json \ "site_id").extractOrElse("")
lazy val alipay_total_price: Double = (json \ "alipay_total_price").extractOpt[String].filter(_.nonEmpty).getOrElse("0").toDouble
lazy val...
Fastest way to extract frames using ffmpeg?
... @Evi1M4chine just remove the -r parameter this will extract all frames
– studioj
Nov 15 '16 at 6:14
14
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What is the JavaScript convention for no operation?
... "function" // returns true
It can be invoked as a function and essentially does nothing as shown here:
setTimeout(function() {
console.log('Start: ', Date.now());
Function.prototype();
console.log('End : ', Date.now());
}, 1000);
Although this is a "true noop" since...
Disable IntelliJ Starred (Package) Imports?
...ure can not be disabled. You need to set it to a high value, e.g. 99.
In 2016.1.1 version
You should also remove the lines under Packages to Use Import with '*',
e.g. import javax.*;
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impro...
Max or Default?
...wiggering the spacklerorke, and riding the flying unicorn to Neverland are all meaningless, impossible, undefined.
Now, what is it that you actually want to do?
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Show constraints on tables command
...QL statement necessary to receate mytable in its current form. You can see all the columns and their types (like DESC) but it also shows you constraint information (and table type, charset, etc.).
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gitignore does not ignore folder
...der. Inside the foo folder I have a bar folder. I would like to ignore all changes to all files inside my bar folder. I have this in my gitignore :
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what is the difference between XSD and WSDL
... Paolo answer is correct. Just enhancing it. As WSDL is actually XML and may or may not have XSD to validate it's structure. Associated XSD may be a separate file and imported in WSDL or full XSD can be embedded inline in WSDL file itself using <WSDL:types> tag .For more details...
Android equivalent to NSNotificationCenter
...resRui Peres
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