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What is database pooling?
...eeps the connections active so that, when a connection is later requested, one of the active ones is used in preference to having to create another one.
Refer to the following diagram for the next few paragraphs:
+---------+
| |
| Clients |
+---------+ |
| |-+ (1) +------+...
Difference between del, remove and pop on lists
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Remember guys... anything index based is one shot O(n-1)... if you have to do a lookup (by value), it will traverse the collection until the element is found.
– Pepito Fernandez
Oct 14 '17 at 14:13
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How can I download a specific Maven artifact in one command line?
...cing your copy of maven to use a given version of a plugin.
This can be done as follows:
1. Add the following line within the <settings> element of your ~/.m2/settings.xml file:
<usePluginRegistry>true</usePluginRegistry>
2. Add the file ~/.m2/plugin-registry.xml with the f...
How do you connect to multiple MySQL databases on a single webpage?
...spread out across a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage.
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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
In Pandas, when I select a label that only has one entry in the index I get back a Series, but when I select an entry that has more then one entry I get back a data frame.
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Is it possible to run one logrotate check manually?
Is it possible to run one iteration of logrotate manually without scheduling it on some interval?
8 Answers
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Why would one use nested classes in C++?
Can someone please point me towards some nice resources for understanding and using nested classes? I have some material like Programming Principles and things like this IBM Knowledge Center - Nested Classes
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Using a piano keyboard as a computer keyboard [closed]
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I haven't done any MIDI programming in years, but your fundamental idea is very sound (no pun).
MIDI is a stream of "events" (or "messages"), two of the most fundamental being "note on" and "note off" which carry with them the note num...
Why Qt is misusing model/view terminology?
...t's naming is misleading. In my opinion however, the problem is not Qt's alone, but is shared by all frameworks that allow us to adhere to the principle of separation of concerns when implementing our UIs. When someone comes up with such a framework, and finds a good way to keep "things" separated, ...
Are there any naming convention guidelines for REST APIs? [closed]
...standards for naming conventions within the API (eg: URL endpoint path components, querystring parameters)? Are camel caps the norm, or underscores? others?
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