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Math - mapping numbers
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Divide to get the ratio between the sizes of the two ranges, then subtract the starting value of your inital range, multiply by the ratio and add the starting value of your second range. In other words,
R = (20 - 10) / (6 - 2)
y = (x - 2) * R + 10
This evenly spreads the num...
How I can I lazily read multiple JSON values from a file/stream in Python?
... That re won't work - the backslashes need escaping. Consider a raw string r'...'.
– Tom Swirly
Jun 19 '17 at 9:48
2
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How to define a two-dimensional array?
... 5 lists, each of 8 items, all set to 0
w, h = 8, 5;
Matrix = [[0 for x in range(w)] for y in range(h)]
You can now add items to the list:
Matrix[0][0] = 1
Matrix[6][0] = 3 # error! range...
Matrix[0][6] = 3 # valid
Note that the matrix is "y" address major, in other words, the "y index" come...
Using an ORM or plain SQL? [closed]
...Like in JPA there are some queries that simply aren't possible that are in raw SQL and when you have to use raw SQL in JPA it's not pretty (C#/.Net at least has dynamic types--var--which is a lot nicer than an Object array);
There are an awful lot of "gotchas" when using ORMs. This includes uninten...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
...er deref by crashing violently :-). It also occasionally checks for out-of-range array indexes and uninitialized variables by screwing up your stack frames and data. Unfortunately it checks these at runtime.
– paxdiablo
Jan 7 '09 at 2:47
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Array or List in Java. Which is faster?
...our experience, are there any such choices in Java between abstraction and raw data forms that do make a significant difference in performance ?
– euphoria83
Apr 4 '09 at 17:53
4
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Fastest Way to Serve a File Using PHP
... }
if ($multipart === true)
{
$range = array(0, $size - 1);
if (array_key_exists('HTTP_RANGE', $_SERVER) === true)
{
$range = array_map('intval', explode('-', preg_replace('~.*=([^,]*).*~', '$1', $_SERVE...
Paging in a Rest Collection
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My gut feeling is that the HTTP range extensions aren't designed for your use case, and thus you shouldn't try. A partial response implies 206, and 206 must only be sent if the client asked for it.
You may want to consider a different approach, such as the...
Is it good practice to NULL a pointer after deleting it?
... So you're making the argument that there shouldn't have been a raw pointer in the first place, and anything involving said pointer shouldn't be blessed with the term "good practice"? Fair enough.
– Mark Ransom
Dec 18 '09 at 23:09
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Is it safe to remove selected keys from map within a range loop?
...one remove selected keys from a map?
Is it safe to combine delete() with range, as in the code below?
4 Answers
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