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Python: changing value in a tuple
...le in-memory. Relying on various implementation details of CPython on a 64-bit system, one way to do this is as follows:
def modify_tuple(t, idx, new_value):
# `id` happens to give the memory address in CPython; you may
# want to use `ctypes.addressof` instead.
element_ptr = (ctypes.c_l...
How to search a Git repository by commit message?
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Though a bit late, there is :/ which is the dedicated notation to specify a commit (or revision) based on the commit message, just prefix the search string with :/, e.g.:
git show :/keyword(s)
Here <keywords> can be a single wo...
Using bitwise OR 0 to floor a number
A colleague of mine stumbled upon a method to floor float numbers using a bitwise or:
6 Answers
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If strings are immutable in .NET, then why does Substring take O(n) time?
...sistent strategy that encourages reuse of most of the memory is also not a win; all you've done is made your garbage collector get slower because now it has to worry about handling interior pointers.
If the substring operations people typically did on strings were completely different, then it wou...
How do I get Windows to go as fast as Linux for compiling C++?
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Unless a hardcore Windows systems hacker comes along, you're not going to get more than partisan comments (which I won't do) and speculation (which is what I'm going to try).
File system - You should try the same operations (including the di...
How long should SQL email fields be? [duplicate]
...ng so any size I impose on my varchar email address field is going to be arbitrary. However, I was wondering what the "standard" is? How long do you guys make it? (same question for Name field...)
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Python 3.x rounding behavior
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I added a bit about AppleScript's handling of this because I love the sarcastic way the "old" behavior is implemented.
– kindall
May 31 '12 at 1:37
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What is the difference between `-fpic` and `-fPIC` gcc parameters?
...ta area (the
".sdata" and ".sbss" sections) and are accessed via 16-bit
relocations off of the $gp register. This limits the size of the
small data area to 64KB, but allows the variables to be directly
accessed via a single instruction.
The default is -mlarge-dat...
How do I remove an item from a stl vector with a certain value?
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If you want to remove an item, the following will be a bit more efficient.
std::vector<int> v;
auto it = std::find(v.begin(), v.end(), 5);
if(it != v.end())
v.erase(it);
or you may avoid overhead of moving the items if the order does not matter to you:
std::vector...
Stopping python using ctrl+c
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On Windows, the only sure way is to use CtrlBreak. Stops every python script instantly!
(Note that on some keyboards, "Break" is labeled as "Pause".)
s...