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How to get line count of a large file cheaply in Python?
...you have, and return that result.
Do you have a better way of doing that without reading the entire file? Not sure... The best solution will always be I/O-bound, best you can do is make sure you don't use unnecessary memory, but it looks like you have that covered.
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How to add column if not exists on PostgreSQL?
...D;
$$
You can't pass these as parameters, you'll need to do variable substitution in the string on the client side, but this is a self contained query that only emits a message if the column already exists, adds if it doesn't and will continue to fail on other errors (like an invalid data type).
I ...
How do I list the functions defined in my shell?
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declare -F
Function names and definitions may be listed with the -f option to the
declare builtin command (see Bash Builtins). The -F option to declare
will list the function names only
(and optionally the source file and line number).
Bash Reference M...
Codeigniter - no input file specified
I am a beginner in Codeigniter and I saw a CI tutorial and was just trying to do a simple thing. I downloaded the CI and added this file to controller directory, but it won't work.
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Why does instanceof return false for some literals?
Array literals and Object literals match...
10 Answers
10
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Is there a Python function to determine which quarter of the year a date is in?
Sure I could write this myself, but before I go reinventing the wheel is there a function that already does this?
13 Answer...
Python: How to get stdout after running os.system? [duplicate]
... to set shell=True to get the same behaviour. You do want to heed the security concerns about passing untrusted arguments to your shell.
If you need to capture stderr as well, simply add stderr=subprocess.STDOUT to the call:
result = subprocess.check_output([batcmd], stderr=subprocess.STDOUT)
to...
How do you format an unsigned long long int using printf?
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Use the ll (el-el) long-long modifier with the u (unsigned) conversion. (Works in windows, GNU).
printf("%llu", 285212672);
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Setting WPF image source in code
...mbedded as a resource in the project. By looking at examples I've come up with the below code. For some reason it doesn't work - the image does not show up.
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Use cases for NoSQL [closed]
...m really interested in what peoples thoughts are on the best use-cases for its use over relational database storage. What should trigger a developer into thinking that particular datasets are more suited to a NoSQL solution. I'm particularly interested in MongoDB and CouchDB as they seem to be g...