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Automatically deleting related rows in Laravel (Eloquent ORM)
... put the whole thing inside a transaction, to ensure the referential integrity..
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Converting int to bytes in Python 3
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That's the way it was designed - and it makes sense because usually, you would call bytes on an iterable instead of a single integer:
>>> bytes([3])
b'\x03'
The docs state this, as well as the docstring for bytes:
>>>...
Why declare unicode by string in python?
...le you've saved is utf-8. The default for Python 2 is ASCII (for Python 3 it's utf-8). This just affects how the interpreter reads the characters in the file.
In general, it's probably not the best idea to embed high unicode characters into your file no matter what the encoding is; you can use st...
Python List vs. Array - when to use?
If you are creating a 1d array, you can implement it as a List, or else use the 'array' module in the standard library. I have always used Lists for 1d arrays.
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Exporting a function in shell
... is exported function available only for child calls? How to apply it to current bash session? like to .bashrc writing, but only for current bash instance...
– vp_arth
May 3 '14 at 15:37
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NameValueCollection vs Dictionary [duplicate]
...cannot.
Personally if you don't have duplicate keys, then I would stick with the Dictionary. It's more modern, uses IEnumerable<> which makes it easy to mingle with Linq queries. You can even create a Dictionary using the Linq ToDictionary() method.
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PowerShell says “execution of scripts is disabled on this system.”
...ExecutionPolicy Cmdlet.
When you are done, you can set the policy back to its default value with:
Set-ExecutionPolicy Restricted
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Difference between validate(), revalidate() and invalidate() in Swing GUI
...s invalid. Means the content is somehow wrong and must be re-laid out. But it's just a kind of mark/flag. It's possible that multiple invalid containers must be refreshed later.
validate() performs relayout. It means invalid content is asked for all the sizes and all the subcomponents' sizes are se...
Chrome hangs after certain amount of data transfered - waiting for available socket
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Looks like you are hitting the limit on connections per server. I see you are loading a lot of static files and my advice is to separate them on subdomains and serve them directly with Nginx for example.
Create a subdomain called img.yoursite...
Does free(ptr) where ptr is NULL corrupt memory?
... (ptr)
free(ptr);
This is because some C runtimes (I for sure remember it was the case on PalmOS) would crash when freeing a NULL pointer.
But nowadays, I believe it's safe to assume free(NULL) is a nop as per instructed by the standard.
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