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What is polymorphism, what is it for, and how is it used?
What is polymorphism, what is it for, and how is it used?
28 Answers
28
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
23 Answers
23
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jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
I’m making requests to my server using jQuery.post() and my server is returning JSON objects (like { "var": "value", ... } ). However, if any of the values contains a single quote (properly escaped like \' ), jQuery fails to parse an otherwise valid JSON string. Here’s an example of what I m...
Should I commit or rollback a read transaction?
I have a read query that I execute within a transaction so that I can specify the isolation level. Once the query is complete, what should I do?
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Discuz菜单栏下面广告怎么弄？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...局 页头二级导航栏广告：广告 HTML 代码如下:<div id="dzf" class="cl"><style type="text css"...后台“运营”、“站点广告”、“广告列表 - 全局 页头二级导航栏广告”：
广告 HTML 代码如下:
<div id="dzf" class="cl">
<style type="text/css">
#dzf{p...
Dynamically creating keys in a JavaScript associative array
All the documentation I've found so far is to update keys that are already created:
9 Answers
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What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
I have tried reading some articles, but I am not very clear on the concepts yet.
4 Answers
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Why would you use an ivar?
I usually see this question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q).
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Conveniently Declaring Compile-Time Strings in C++
Being able to create and manipulate strings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
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Efficient evaluation of a function at every cell of a NumPy array
Given a NumPy array A , what is the fastest/most efficient way to apply the same function, f , to every cell?
6 Ans...