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Running bash script from within python
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Making sleep.sh executable and adding shell=True to the parameter list (as suggested in previous answers) works ok. Depending on the search path, you may also need to add ./ or some other appropriate path. (Ie, change "sleep.sh" to "./sleep.sh".)
The...
Python: List vs Dict for look up table
...f you don't need to associate values, use sets.
Memory
Both dictionaries and sets use hashing and they use much more memory than only for object storage. According to A.M. Kuchling in Beautiful Code, the implementation tries to keep the hash 2/3 full, so you might waste quite some memory.
If you...
How to grep and replace
I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string.
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...iler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens.
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Case insensitive comparison of strings in shell script
...t to compare two strings ignoring case, how can it be done? Is there any standard command for this?
12 Answers
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Copying text outside of Vim with set mouse=a enabled
...t a lot of code that is more than on your screen? (then you have to scroll and select at the same time)
– Ozkan
Apr 2 '13 at 12:25
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Recursive search and replace in text files on Mac and Linux
In the linux shell, the following command will recursively search and replace all instances of 'this' with 'that' (I don't have a Linux shell in front of me, but it should do).
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Nokogiri installation fails -libxml2 is missing
...is present, however, it doesn't differentiate between "libxml2 is missing" and "a compiler to test libxml2 is missing".
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Time complexity of Euclid's Algorithm
...ow what happens over two iterations:
a', b' := a % b, b % (a % b)
Now a and b will both decrease, instead of only one, which makes the analysis easier. You can divide it into cases:
Tiny A: 2a <= b
Tiny B: 2b <= a
Small A: 2a > b but a < b
Small B: 2b > a but b < a
Equal: a ==...
What do the terms “CPU bound” and “I/O bound” mean?
What do the terms "CPU bound" and "I/O bound" mean?
11 Answers
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