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Call one constructor from another
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edited Aug 20 '19 at 18:13
AustinWBryan
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Python - abs vs fabs
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math.fabs() converts its argument to float if it can (if it can't, it throws an exception). It then takes the absolute value, and returns the result as a float.
In addition to floats, abs() also works with integers and complex numbers. Its return...
Test if lists share any items in python
I want to check if any of the items in one list are present in another list. I can do it simply with the code below, but I suspect there might be a library function to do this. If not, is there a more pythonic method of achieving the same result.
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Programmatically get the cache line size?
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On Linux (with a reasonably recent kernel), you can get this information out of /sys:
/sys/devices/system/cpu/cpu0/cache/
This directory has a subdirectory for each level of cache. Each of those directories contains the following fi...
Update MongoDB field using value of another field
In MongoDB, is it possible to update the value of a field using the value from another field? The equivalent SQL would be something like:
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Concat scripts in order with Gulp
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I had a similar problem recently with Grunt when building my AngularJS app. Here's a question I posted.
What I ended up doing is to explicitly list the files in order in the grunt config. The config file will then look like this:
[
'/path/to/app.js',
'/...
How to “EXPIRE” the “HSET” child key in redis?
...he sake of keeping Redis simple.
Quoth Antirez, creator of Redis:
Hi, it is not possible, either use a different top-level key for that
specific field, or store along with the filed another field with an
expire time, fetch both, and let the application understand if it is
still valid or n...
how to create a file name with the current date & time in python?
Here is a functional code (Create file with success)
6 Answers
6
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...ssword Hasher that is default implemented in the UserManager that comes with MVC 5 and ASP.NET Identity Framework, is secure enough? And if so, if you could explain to me how it works?
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What does new self(); mean in PHP?
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self points to the class in which it is written.
So, if your getInstance method is in a class name MyClass, the following line :
self::$_instance = new self();
Will do the same as :
self::$_instance = new MyClass();
Edit : a couple more information...