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OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
...应的bucket的链表头(easy_hash_t和easy_hash_list_t实现)
2.5 将session串入到连接的session list中。并且启动timeout watcher，事件为之前为session设置的timeout时间
3. 调用easy_connection_write_socket将所有这些session被分发到的connection的output输...
How to find all the tables in MySQL with specific column names in them?
...EMA to the fields of the return set to see all databases + tables that contain that column name.
– Abel
May 17 '13 at 15:02
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In Python, how do I index a list with another list?
...co or anything, so make of it what you will) showed the list comprehension 2.5x faster than the loop (1000 elements, repeated 10000 times).
– James Hopkin
Jun 18 '09 at 12:00
2
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Running junit tests in parallel in a Maven build?
...ing to say. Newer versions of surefire are also better/more efficient than 2.5 described in the post, so you may get slightly better results.
– krosenvold
May 4 '11 at 18:54
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Maximum size of an Array in Javascript
...kes 1300ms, which is pretty bad
x=4e7 takes 11000ms and allocates an extra 2.5GB of memory
So around 30 million elements is a hard upper limit, because the javascript VM falls off a cliff at 40 million elements and will probably crash the process.
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Way to get all alphabetic chars in an array in PHP?
...st do $array[] = chr($i) to append an element
– Tom Haigh
Jan 10 '09 at 23:21
That's essentially what range does but t...
Best way to convert strings to symbols in hash
...
In Ruby >= 2.5 (docs) you can use:
my_hash.transform_keys(&:to_sym)
Using older Ruby version? Here is a one-liner that will copy the hash into a new one with the keys symbolized:
my_hash = my_hash.inject({}){|memo,(k,v)| memo[k....
Best way to format integer as string with leading zeros? [duplicate]
...l(cnt)
% formatting: lambda n, cnt=2: "%0*d" % (cnt, n)
If on Python >2.5, see a third option in clorz's answer.
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Is String.Contains() faster than String.IndexOf()?
...nce of a '@' char. 17.000.000 calls to Contains/IndexOf are made. Result: 12.5 sec for all Contains() calls, 2.5 sec for all IndexOf() calls. => IndexOf performs 5 times faster!! (.Net 4.8)
– CSharper
Sep 21 at 7:55
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jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
...t;
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
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