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jQuery Ajax POST example with PHP
..., false);
});
});
Note: Since jQuery 1.8, .success(), .error() and .complete() are deprecated in favor of .done(), .fail() and .always().
Note: Remember that the above snippet has to be done after DOM ready, so you should put it inside a $(document).ready() handler (or use the $() shorthand)...
Postgres and Indexes on Foreign Keys and Primary Keys
...put indexes on Foreign Keys and Primary Keys? How can I tell? Is there a command that will return all indexes on a table?
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Circle-Rectangle collision detection (intersection)
...this: if none of the edges has a point in the circle (if all the edges are completely "outside" the circle), then the only way the circle can still intersect the polygon is if it lies completely inside the polygon.)
With that insight, something like the following will work, where the circle has cen...
Array or List in Java. Which is faster?
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Effective Java recommends Lists for they help with API interoperability, and also more secure with type safety.
– juanmf
Dec 13 '14 at 15:04
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Is it expensive to use try-catch blocks even if an exception is never thrown?
...ork of setting up the try at runtime, the code's metadata is structured at compile time such that when an exception is thrown, it now does a relatively expensive operation of walking up the stack and seeing if any try blocks exist that would catch this exception. From a layman's perspective, try may...
【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
文章源自：http://doc.iotxx.com/index.php?title=BLE技术揭秘
BLE技术揭秘
BLE是低功耗蓝牙的英文缩写（Bluetooth Low Energy），是蓝牙4.0版本起开始支持的新的、低功耗版本的蓝牙技术规范。蓝牙技术联盟（Bluetooth SIG）在2010年发布了跨...
Correct way to use StringBuilder in SQL
...ard that string concatenation will use a StringBuilder under the covers if compiled with the Sun/Oracle compiler. This is true, it will use one StringBuilder for the overall expression. But it will use the default constructor, which means in the majority of cases, it will have to do a reallocation. ...
NumPy: function for simultaneous max() and min()
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Why are we not to throw these exceptions?
...there might not be a need for it. But as soon as you create something more complex where individual parts work as independent “components” it often makes sense to introduce custom exceptions for custom error situations. For example, if you have some access control layer, and you try to execute s...
Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
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OR
Use href="javascript:void(0)"
The second is clearly much easier to communicate.
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