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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:
...
Rename multiple files in a directory in Python [duplicate]
...e script itself. Instead of using . as the dir, you could make a variable called dir and use that, then prepend dir to the filename.
– styfle
May 18 '11 at 5:53
18
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How to compare two dates in php
How to compare two dates in php if dates are in format '03_01_12' and '31_12_11' .
15 Answers
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Continuously read from STDOUT of external process in Ruby
...iven by blender line by line to update a progress bar in a GUI. It's not really important that blender is the external process whose stdout I need to read.
...
Convert base64 string to ArrayBuffer
...e is loaded.
I would like to do this in javascript without making an ajax call to the server if possible.
9 Answers
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Concurrent HashSet in .NET Framework?
...ass.
private ConcurrentBag<string> _data;
Self-implementation
Finally, as you did, you can implement your own data type, using lock or other ways that the .NET provides you to be thread-safe. Here is a great example: How to implement ConcurrentHashSet in .Net
The only drawback of this sol...
How to write inline if statement for print?
... condition:
block
if expression (introduced in Python 2.5)
expression_if_true if condition else expression_if_false
And note, that both print a and b = a are statements. Only the a part is an expression. So if you write
print a if b else 0
it means
print (a if b else 0)
and similarly ...
How to easily resize/optimize an image size with iOS?
...its original size, I'm planning on resizing the image to something a bit smaller to save on space/performance.
18 Answers
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How to find where gem files are installed
I can finds gems that are installed using gem list , but it doesn't show me where the gems are installed.
10 Answers
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How can I force users to access my page over HTTPS instead of HTTP?
...
The way I've done it before is basically like what you wrote, but doesn't have any hardcoded values:
if($_SERVER["HTTPS"] != "on")
{
header("Location: https://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]);
exit();
}
...