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What is the purpose of the single underscore “_” variable in Python?
What is the meaning of _ after for in this code?
5 Answers
5
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What are some common uses for Python decorators? [closed]
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Great example! No idea what it does though. An explanation what you are doing there, and how the decorator solves the problem would be very nice.
– MeLight
Jun 15 '14 at 16:00
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What is the dual table in Oracle?
I've heard people referring to this table and was not sure what it was about.
14 Answers
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What is the best method of handling currency/money?
... :converter => Proc.new { |value| Money.new(value) }
# ...
What you'll get:
Without any extra changes, all of your forms will show dollars and cents, but the internal representation is still just cents. The forms will accept values like "$12,034.95" and convert it for you. There's ...
What is a “callback” in C and how are they implemented?
...callback:
int event_cb_register(event_cb_t cb, void *userdata);
This is what code would look like that registers a callback:
static void my_event_cb(const struct event *evt, void *data)
{
/* do stuff and things with the event */
}
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event_cb_register(my_event_cb, &my_custom_data);
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Import and Export Excel - What is the best library? [closed]
...tried CSV approach too, but there are several issues with it. For example, what if you want to have a multi-line text in a cell? I couldn't make Excel import such a CSV.
– Igor Brejc
Apr 25 '09 at 14:36
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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
...ls for lat and 13 for lng. vartec wrote that 8 decimals is equal to 1.1mm; what about 7 and 6 ? (I'm not good at maths). I'm using double for now but would like to check if I could gain in distance calculations by changing type. Thank you.
– Alain Zelink
Feb 26...
What should I put in a meteor .gitignore file?
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Here is what I use with Webstorm and Meteor 1.4 deployed with Mupx.
# Meteor files to ignore now handled by .ignore file within .Meteor folder automatically
# settings file to ignore to protect API keys
settings.json
# MUP / MUPX...
How is a CRC32 checksum calculated?
...; they're different kinds of things. Also, since the bits are only 0 or 1, what would -1 even be? Really, we're working in the ring of polynomials with coefficients in the field $Z/2Z$, which only has two elements, 0 and 1, and where $1+1=0$. By putting the cofficients be in a field, then the polyno...
What is Weak Head Normal Form?
What does Weak Head Normal Form (WHNF) mean? What does Head Normal form (HNF) and Normal Form (NF) mean?
6 Answers
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