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What is in your Mathematica tool bag? [closed]
We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica?
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Multiple file upload in php
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I know this is an old post but some further explanation might be useful for someone trying to upload multiple files... Here is what you need to do:
Input name must be be defined as an array i.e.
name="inputName[]"
Input elemen...
How to print a dictionary line by line in Python?
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I know this is old, but I thought it would be worth mentioning that this doesn't work if cars[x] is integers. It isn't what the OP was requesting, so I'm just saying it for anybody that stumbles upon this assuming it's a blanket...
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
...irst the printf and then puts and the retq return.
With __builtin_expect
Now replace if (i) with:
if (__builtin_expect(i, 0))
and we get:
0000000000000000 <main>:
0: 48 83 ec 08 sub $0x8,%rsp
4: 31 ff xor %edi,%edi
6: e8 00 0...
Python class inherits object
...problem…
Python introduced new-style classes back in Python 2.2, and by now old-style classes are really quite old. Discussion of old-style classes is buried in the 2.x docs, and non-existent in the 3.x docs.
The problem is, the syntax for old-style classes in Python 2.x is the same as the alter...
SQLAlchemy default DateTime
...key=True)
created_date = Column(DateTime, default=datetime.datetime.utcnow)
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How do I parse an ISO 8601-formatted date?
... only) in ambiguous cases. So ONLY use it if you need to parse input of unknown format and are okay to tolerate occasional misreads.
– ivan_pozdeev
Apr 23 '15 at 23:34
2
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No module named _sqlite3
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That's good for Python 2, but pysqlite is now sqlite3 in Python 3, and you can't pip -m install that.
– clabe45
Mar 23 '18 at 23:51
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Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [
...s 4 multiprocessors and only 4 blocks are
being executed simultaneously).
Now a simple case: processing a 512x512 image
Suppose we want one thread to process one pixel (i,j).
We can use blocks of 64 threads each. Then we need 512*512/64 = 4096 blocks
(so to have 512x512 threads = 4096*64)
It's c...
Calling parent class __init__ with multiple inheritance, what's the right way?
...super.
[Response question as later edited]
So it seems that unless I know/control the init's of the classes I
inherit from (A and B) I cannot make a safe choice for the class I'm
writing (C).
The referenced article shows how to handle this situation by adding a wrapper class around A and ...