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ASP.NET MVC Razor Concatenation
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You should wrap the inner part of the call with ( ):
<li id="item_@(item.TheItemId)">
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TransactionManagementError “You can't execute queries until the end of the 'atomic' block” while usi
...ementError when trying to save a Django User model instance and in its post_save signal, I'm saving some models that have the user as the foreign key.
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Make Heroku run non-master Git branch
...e message and then move on to the next thing. That way you can test things all day long without multiple commits. It's not pretty but it gets the job done :)
– Simon
Nov 18 '14 at 15:50
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How can I remove non-ASCII characters but leave periods and spaces using Python?
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You can filter all characters from the string that are not printable using string.printable, like this:
>>> s = "some\x00string. with\x15 funny characters"
>>> import string
>>> printable = set(string.printable)
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How does “do something OR DIE()” work in PHP?
...ngerous, because you can have statements that you think get executed but really don't, and that's not as obvious as if you had an if block.
– Petruza
Aug 7 '09 at 15:34
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Python set to list
...k that you didn't overwrite list by accident:
>>> assert list == __builtins__.list
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What is an unsigned char?
...d since I posted this, you're better off using int8_t and uint8_t if you really want to represent small integers.
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What is the difference between mutex and critical section?
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Mutexes can be shared between processes, but always result in a system call to the kernel which has some overhead.
Critical sections can only be used within one process, but have the advantage that they only switch to kernel mode in the case of contention - Uncontended acquires, which should be ...
How does the const constructor actually work?
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Const constructor creates a "canonicalized" instance.
That is, all constant expressions begin canonicalized, and later these "canonicalized" symbols are used to recognize equivalence of these constants.
Canonicalization:
A process for converting data that has more than one possible rep...
Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
I'm working on a balloon project with a Raspberry Pi. When we potentially recover the Raspberry Pi, it will most likely be in a rural location and I'd like to turn off the Pi at that point safely.
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