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iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...直接在介绍AFNetworking的时候详解吧。
25.使用NSURLConnection下载数据
1. 创建对象
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];
[NSURLConnection connectionWithRequest:request delegate:self];
2. NSURLCon...
How to check if all elements of a list matches a condition?
...
Note for python3; filter() returns an iterable, not a list. Thus the line would be listb = list(filter(lamba x: x[2] != 0, listb))
– Meg Anderson
Aug 10 at 18:10
...
Automatically add newline at end of curl response body
... this script can generate a ~/.curlrc file with colours.
#!/usr/bin/env python3
from pathlib import Path
import click
chunks = [
('status=', 'blue'),
('%{http_code} ', 'green'),
('%{redirect_url} ', 'green'),
('size=', 'blue'),
('%{size_download} ', 'green'),
('time=', 'bl...
How to retrieve a module's path?
...ful when checking modules called in another script for example.
EDIT:
In python3, importlib module should do:
Doc of importlib.util.find_spec:
Return the spec for the specified module.
First, sys.modules is checked to see if the module was already imported. If so, then sys.modules[name]....
How to convert local time string to UTC?
...ing .utcnow() or .utcfromtimestamp(xxx). As you've presumably moved on to python3,you should be using timezone aware datetime objects.
>>> from datetime import timezone
>>> dt_now = datetime.now(tz=timezone.utc)
>>> dt_ts = datetime.fromtimestamp(1571595618.0, tz=timezone...
How to form tuple column from two columns in Pandas
...
in python3, you have to use list. This should work: df['new_col'] = list(zip(df.lat, df.long))
– paulwasit
Nov 2 '16 at 8:06
...
Why does += behave unexpectedly on lists?
...print id(foo), id(f), id(g) (don't forget the additional ()s if you are on Python3).
BTW: The += operator is called "augmented assignment" and generally is intended to do inplace modifications as far as possible.
share
...
Python group by
... the input to be sorted:
from functools import reduce # import needed for python3; builtin in python2
from collections import defaultdict
def groupBy(key, seq):
return reduce(lambda grp, val: grp[key(val)].append(val) or grp, seq, defaultdict(list))
(The reason for ... or grp in the lambda is t...
Create Pandas DataFrame from a string
...imple way to do this is to use StringIO.StringIO (python2) or io.StringIO (python3) and pass that to the pandas.read_csv function. E.g:
import sys
if sys.version_info[0] < 3:
from StringIO import StringIO
else:
from io import StringIO
import pandas as pd
TESTDATA = StringIO("""col1;co...
SSMS插件开发指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
... }
#endregion
}
}
运行效果：
工程源代码下载：SSMSAddin.zip。
该部分源码研究通过查阅英文资料、反编译ssmsboost等，对于有SSMS插件开发需求的小伙伴们，应该能够少走很多弯路。
（http://www.ssmsboost.com/ 一款功...