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Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I
...s important when it's called several times a second throughout the day and 100,000 times in a nightly process.
– Jason Goemaat
Aug 4 '14 at 21:06
...
Get the first item from an iterable that matches a condition
... the next built-in and so I assume that for some mysterious reason they're 100% focused on versions 2.5 and older -- without mentioning the Python-version issue (but then I don't see that mention in the answers that do mention the next built-in, which is why I thought it necessary to provide an answ...
Search for one value in any column of any table inside a database
..., in case of link rot:
CREATE PROC SearchAllTables
(
@SearchStr nvarchar(100)
)
AS
BEGIN
-- Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
-- Purpose: To search all columns of all tables for a given search string
-- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripo...
How many threads can a Java VM support?
... try {
Thread.sleep(1000);
} catch (Exception e){
System.err.println(e);
}
}
}
}).start();
...
How can I loop through a List and grab each item?
...a foreach loop vs. a for loop. I just ran a quick test with your code with 100,000 entries in the List and the foreach loop took twice as long (actually 1.9 times as long). This isn't necessarily true in all situations, but in many. It depends on the size of the List, how many operations you do with...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...gi-bin \?
cache deny QUERY
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
coredump_dir /var/spool/squid
3.测试机配置...
Positioning a div near bottom side of another div
...;
<div style='background-color: yellow; width: 70%;
height: 100px; position: relative;'>
Outer
<div style='background-color: green;
position: absolute; left: 0; width: 100%; bottom: 0;'>
<div style='background-color: magenta; width: 100px;
...
SCOPE_IDENTITY() for GUIDs?
...
CREATE TABLE TestTable(KEY uniqueidentifier, ID VARCHAR(100), Name VARCHAR(100), Value tinyint);
Declare @id uniqueidentifier ;
DECLARE @TmpTable TABLE (KEY uniqueidentifier);
INSERT INTO [dbo].[TestTable]
([ID], [Name], Value])
OUTPUT INSERTED.KEY INTO @...
navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't
...ator.geolocation.getCurrentPosition(successCallback,errorCallback,{timeout:10000});
Secondly, I have experienced quite different reliability in different contexts. Here at home, I get a callback within a second or two, although the accuracy is poor.
At work however, I experience quite bizarre var...
Convert two lists into a dictionary
...ur top examples:
import numpy
import timeit
l1 = list(numpy.random.random(100))
l2 = list(numpy.random.random(100))
And we see here that dict(zip(... does indeed run faster for larger datasets by about 20%.
>>> min(timeit.repeat(lambda: {k: v for k, v in zip(l1, l2)}))
9.698965263989521...