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Queries vs. Filters
... exactly right. Any time you need to restrict the entire set of documents by some metric, that's usually a case that a filter is appropriate. So maybe by age, length, size, etc etc
– Zach
Jan 30 '13 at 20:44
...
Why malloc+memset is slower than calloc?
...) and calloc() are mostly there to take small allocations (anything from 1 byte to 100s of KB) and group them into larger pools of memory. For example, if you allocate 16 bytes, malloc() will first try to get 16 bytes out of one of its pools, and then ask for more memory from the kernel when the po...
How do sessions work in Express.js with Node.js?
... session data.
From here, it looks like this session data on the server is by default held in memory, although that could be altered to whatever storage form implements the appropriate API.
So if you want to check things without a specific req request object, like you said, you need to just access...
How do I compare version numbers in Python?
...'1.3.xy123'
packaging.version.parse is a third-party utility but is used by setuptools (so you probably already have it installed) and is conformant to the current PEP 440; it will return a packaging.version.Version if the version is compliant and a packaging.version.LegacyVersion if not. The latt...
如何查看Oracle用户的SQL执行历史记录？ - 数据库(内核) - 清泛网 - 专注C/...
...看Oracle用户的SQL执行历史记录？select * from v$sqlarea t order by t LAST_ACTIVE_TIME desc注意 ：执行此语句等等一些相关的语句 必须具有DBA 的权限 虽然
select * from v$sqlarea t order by t.LAST_ACTIVE_TIME desc
注意 ：执行此语句等等一些相关的语...
How to change column order in a table using sql query in sql server 2005?
...nt, of course, it has no sense: nothing should depend on the column order. By the way, there is an ORDINAL_POSITION column qhen you query "INFORMATION_SCHEMA.COLUMNS". I don't know what it means... but it must have something to do with this.
– JotaBe
Jun 21 '13...
Bootstrap: align input with button
...rm-control">
</div>
Twitter Bootstrap 3
As shown in the answer by @abimelex, inputs and buttons can be aligned by using the .input-group classes (see http://getbootstrap.com/components/#input-groups-buttons)
Group button on the left side
<div class="input-group">
<span class...
How to use JNDI DataSource provided by Tomcat in Spring?
...
what file exactly do you mean by "Tomcat's web context.xml" ?
– Pavel Niedoba
Jun 16 '15 at 11:23
1
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Simple basic explanation of a Distributed Hash Table (DHT)
...ck with DHTs is that the node that gets to store a particular key is found by hashing that key, so in effect your hash-table buckets are now independent nodes in a network.
This gives a lot of fault-tolerance and reliability, and possibly some performance benefit, but it also throws up a lot of hea...
Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
...atz(Yukihiro Matsumoto) explains it in an old thread:
Hi,
In message "[ruby-talk:02706] X++?"
on 00/05/10, Aleksi Niemelä <aleksi.niemela@cinnober.com> writes:
|I got an idea from http://www.pragprog.com:8080/rubyfaq/rubyfaq-5.html#ss5.3
|and thought to try. I didn't manage to make "au...