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Understanding slice notation
I need a good explanation (references are a plus) on Python's slice notation.
33 Answers
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Using try vs if in python
...he function were to return a list or None), if you expect that 99 % of the time result will actually contain something iterable, I'd use the try/except approach. It will be faster if exceptions really are exceptional. If result is None more than 50 % of the time, then using if is probably better.
T...
Redis strings vs Redis hashes to represent JSON: efficiency?
...h other Objects, and you tend to only access a small subset of fields at a time, it might be better to go with option 2.
Advantages: considered a "good practice." Each Object is a full-blown Redis key. JSON parsing is fast, especially when you need to access many fields for this Object at once. Di...
Disabling swap files creation in vim
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You could also add that some time the saved backup files might save a devs skin
– Bartek Skwira
Sep 4 '14 at 11:21
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How to do relative imports in Python?
...e the relative imports successfully.
I have encountered this problem many times while doing relative imports. And, after reading all the previous answers, I was still not able to figure out how to solve it, in a clean way, without needing to put boilerplate code in all files. (Though some of the co...
Get to UIViewController from UIView?
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Since this has been the accepted answer for a long time, I feel I need to rectify it with a better answer.
Some comments on the need:
Your view should not need to access the view controller directly.
The view should instead be independent of the view controller, and be abl...
libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
libevent+protobuf轻松搭建tcpserver1. 基础代码 设置某fd为O_NONBLOCK模式 int set_non_block(int fd); server端socket流程:socket(),setsoc...1. 基础代码
// 设置某fd为O_NONBLOCK模式
int set_non_block(int fd);
// server端socket流程:socket(),setsockopt(),bi...
Date format Mapping to JSON Jackson
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Is it just as easy to use Java 8 LocalDateTime or ZonedDateTime instead of Date? Since Date is basically deprecated (or at least many of its methods), I would like to use those alternatives.
– houcros
Nov 24 '16 at 16:29
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Test if a property is available on a dynamic variable
...ry
{
var x = myVariable.MyProperty;
// do stuff with x
}
catch (RuntimeBinderException)
{
// MyProperty doesn't exist
}
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Deleting folders in python recursively
I'm having a problem with deleting empty directories. Here is my code:
11 Answers
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