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Rounding up to next power of 2
...**
* return the smallest power of two value
* greater than x
*
* Input range: [2..2147483648]
* Output range: [2..2147483648]
*
*/
__attribute__ ((const))
static inline uint32_t p2(uint32_t x)
{
#if 0
assert(x > 1);
assert(x <= ((UINT32_MAX/2) + 1));
#endif
return 1 <&l...
Set type for function parameters?
...just the nature of some languages. The set of programming languages should range from weakly typed to strongly typed the same way it should range from low level to high level. Additionally, JavaScript provides the instanceof and typeof keywords to aid in this. Although this takes up more code, maybe...
How to check if character is a letter in Javascript?
... solution based on a /[a-z]/i pattern, this trick will accept the complete range of Latin characters. Compared to the other solution containing a complete Latin Unicode upper-lower mapping, you save 99.2% in code size. It is misleading to call this solution "wrong", because it depends on your proble...
Can you use if/else conditions in CSS?
... the major browsers.)
:hover - Does the mouse hover over this element?
:in-range/:out-of-range - Is the input value between/outside min and max limits?
:invalid/:valid - Does the form element have invalid/valid contents?
:link - Is this an unvisited link?
:not() - Invert the selector.
:target - Is ...
Is there a Python function to determine which quarter of the year a date is in?
... 1 to 12, it's easy to check for yourself what formula is right:
for m in range(1, 13):
print m//4 + 1,
print
gives 1 1 1 2 2 2 2 3 3 3 3 4 -- two four-month quarters and a single-month one (eep).
for m in range(1, 13):
print (m-1)//3 + 1,
print
gives 1 1 1 2 2 2 3 3 3 4 4 4 -- now doesn't...
What is the difference between UTF-8 and ISO-8859-1?
...ing schemes used to represent alphabets that can be represented within the range of 127 to 255. These various alphabets are defined as "parts" in the format ISO-8859-n, the most familiar of these likely being ISO-8859-1 aka 'Latin-1'. As with UTF-8, 7-bit-safe ASCII remains unaffected regardless of ...
NumPy array initialization (fill with identical values)
...y_fill, empty_colon, ones_times, repeat, tile, full, list_to_array],
n_range=[2 ** k for k in range(27)],
xlabel="len(a)",
logx=True,
logy=True,
)
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How to randomly select rows in SQL?
...nt;
SELECT @minValue = min(id), @maxValue = max(id) from [TABLE];
DECLARE @range int = @maxValue+1 - @minValue;
with cte (n) as (
select 1 union all
select n+1 from cte
where n < @NumItems
)
select cast( @range * rand(cast(newid() as varbinary(100))) + @minValue as int) tp
into #Nt
from...
How to get the last day of the month?
...ing at the documentation for the calendar module, but a method called monthrange provides this information:
monthrange(year, month)
Returns weekday of first day of the month and number of days in month, for the specified year and month.
>>> import calendar
>>> cale...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
I have some code and when it executes, it throws a IndexOutOfRangeException , saying,
4 Answers
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