大约有 44,000 项符合查询结果（耗时：0.0177秒） [XML]
SQL Server dynamic PIVOT query?
...rchar(3),
amount money
)
insert into temp values ('1/1/2012', 'ABC', 1000.00)
insert into temp values ('2/1/2012', 'DEF', 500.00)
insert into temp values ('2/1/2012', 'GHI', 800.00)
insert into temp values ('2/10/2012', 'DEF', 700.00)
insert into temp values ('3/1/2012', 'ABC', 1100.00)
DECLA...
How to extract numbers from a string and get an array of ints?
... This method detects digits but does not detect formated numbers, e.g. 2,000. For such use -?\\d+,?\\d+|-?\\d+
– Mugoma J. Okomba
Mar 9 '16 at 12:25
...
What is the maximum possible length of a query string?
...5.x. However, longer URLs will work. No further testing was done after 100,000 characters.
Safari (Browser)
At least 80,000 characters will work. Testing was not tried beyond that.
Opera (Browser)
At least 190,000 characters will work. Stopped testing after 190,000 characters. Opera 9 for Windows co...
No ConcurrentList in .Net 4.0?
...hese basic needs.
And for what its worth: I did a basic test of adding 10,000,000 items to regular List and ConcurrentList and the results were:
List finished in: 7793 milliseconds.
Concurrent finished in: 8064 milliseconds.
public class ConcurrentList<T> : IList<T>, IDisposable
{
...
PDOException SQLSTATE[HY000] [2002] No such file or directory
...was working with models and DB I got the error:
[PDOException]
SQLSTATE[HY000] [2002] No such file or directory
The reason I found is just because PHP and MySQL can't get connected themselves.
To get this problem fixed, I follow the next steps:
Open a terminal and connect to the mysql with:
my...
outline on only one border
... block;
padding: 2px 0;
line-height: 1px;
border-top: 1px dashed #000;
}
.element p {
padding: 0 10px;
}
<div class="element">
<p>Some content comes here...</p>
</div>
(Or see external demo.)
All sizes and colors are just placeholders, you can cha...
Using sed to mass rename files
...ge p5-file-rename), or other systems with perl rename (prename):
rename s/0000/000/ F0000*
or on systems with rename from util-linux-ng, such as RHEL:
rename 0000 000 F0000*
That's a lot more understandable than the equivalent sed command.
But as for understanding the sed command, the sed man...
Replace non-ASCII characters with a single space
...ASCII replacement methods."""
import re
from timeit import timeit
# 10_000 is typical in the project that I'm working on and most of the text
# is going to be non-ASCII.
text = 'Æ' * 10_000
print(timeit(
"""
result = ''.join([c if ord(c) < 128 else '?' for c in text])
""",
numb...
Max length for client ip address [duplicate]
...ly written as 8 groups of 4 hex digits separated by colons: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. 39 characters is appropriate to store IPv6 addresses in this format.
Edit: However, there is a caveat, see @Deepak's answer for details about IPv4-mapped IPv6 addresses. (The correct maximum IPv6 s...
Spring RestTemplate timeout
...tpRequestFactory) restTemplate.getRequestFactory();
rf.setReadTimeout(1 * 1000);
rf.setConnectTimeout(1 * 1000);
The first time this code is called it will set the timeout for the HttpComponentsClientHttpRequestFactory class used by the RestTemplate. Therefore, all subsequent calls made by RestTem...