大约有 41,000 项符合查询结果（耗时：0.0481秒） [XML]
How to convert char to int?
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answered Sep 8 '10 at 9:03
Joel MuellerJoel Mueller
26.7k88 gold badges6161 silver badges8585 bronze badges
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jQuery count child elements
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answered Nov 27 '10 at 10:25
Nick Craver♦Nick Craver
580k125125 gold badges12551255 silver badges11351135 bronze badges
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Cost of exception handlers in Python
...ve just tried the following:
import timeit
statements=["""\
try:
b = 10/a
except ZeroDivisionError:
pass""",
"""\
if a:
b = 10/a""",
"b = 10/a"]
for a in (1,0):
for s in statements:
t = timeit.Timer(stmt=s, setup='a={}'.format(a))
print("a = {}\n{}".format(a,s))
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Implement paging (skip / take) functionality with this query
... MUST there must be ORDER BY statement
-- the paging comes here
OFFSET 10 ROWS -- skip 10 rows
FETCH NEXT 10 ROWS ONLY; -- take 10 rows
If we want to skip ORDER BY we can use
SELECT col1, col2, ...
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ORDER BY CURRENT_TIMESTAMP
OFFSET 10 ROWS -- skip 10 rows
FETCH NEXT 10 ...
MySQL select 10 random rows from 600K rows fast
How can I best write a query that selects 10 rows randomly from a total of 600k?
26 Answers
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JS: Check if date is less than 1 hour ago?
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Define
var ONE_HOUR = 60 * 60 * 1000; /* ms */
then you can do
((new Date) - myDate) < ONE_HOUR
To get one hour from a date, try
new Date(myDate.getTime() + ONE_HOUR)
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How to disable HTML button using JavaScript?
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edited Jun 21 '17 at 10:05
answered Jun 10 '10 at 13:18
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Why does range(start, end) not include end?
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Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains 10 elements which equals len(range(0, 10)). Remember that programmers prefer 0-based indexing.
Also, consider the following common code snippet:
for i in range(len(li))...
Regular expression to limit number of characters to 10
...te a regular expression that will only allow lowercase letters and up to 10 characters. What I have so far looks like this:
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When is a Java method name too long? [closed]
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answered Feb 9 '10 at 17:01
JaredParJaredPar
648k133133 gold badges11601160 silver badges13951395 bronze badges
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