大约有 16,000 项符合查询结果（耗时：0.0367秒） [XML]
Remove duplicate rows in MySQL
...n the backup_employee table
⇒ Using this approach, 1.6M registers were converted into 6k in less than 200s.
Chetan, following this process, you could fast and easily remove all your duplicates and create a UNIQUE constraint by running:
CREATE TABLE tmp_jobs LIKE jobs;
ALTER TABLE tmp_jobs ADD...
What does functools.wraps do?
...gt;>> basetwo = partial(int, base=2)
>>> basetwo.__doc__ = 'Convert base 2 string to an int.'
>>> basetwo('10010')
18
Which brings me to the conclusion that, @wraps gives a call to partial() and it passes your wrapper function as a parameter to it. The partial() in the end r...
Quick Sort Vs Merge Sort [duplicate]
...
pastebin.com/sYs4u6Kd
– compski
Nov 6 '13 at 16:49
...
What is the most pythonic way to check if an object is a number?
...
@NicolasAbril, convert 0*x==0 to a bool inside isNumber.
– shrewmouse
Aug 16 '19 at 19:05
|
...
Why do we need the “finally” clause in Python?
...
@Mark Actually, sys.exit throws a normal exception. But yes, anything that causes the process to terminate immediately will mean that nothing else executes.
– Antimony
Jul 18 '12 at 23:52
...
Extension methods cannot be dynamically dispatched
...
it says Cannot convert type 'string' to 'int'
– nnmmss
Jan 5 '14 at 13:44
3
...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
...type(obj)
if t in (list, tuple):
if t == tuple:
# Convert to a list if a tuple to
# allow assigning to when copying
is_tuple = True
obj = list(obj)
else:
# Otherwise just do a quick slice copy
obj = obj[:]...
Parse JSON in C#
...alent Serialize/Deserialize methods to the code above..
Deserialize:
JsonConvert.DeserializeObject<T>(string json);
Serialize:
JsonConvert.SerializeObject(object o);
This are already part of Json.NET so you can just call them on the JsonConvert class.
Link: Serializing and Deserializin...
How to compare arrays in JavaScript?
......" well, then you should note there ARE loops. First recursive loop that converts Array to string and second, that compares two strings. So this method is faster than use of string.
I believe that larger amounts of data should be always stored in arrays, not in objects. However if you use objects,...
How to return a file using Web API?
...e
{
// sendo file to client
byte[] bytes = Convert.FromBase64String(file.pdfBase64);
result = Request.CreateResponse(HttpStatusCode.OK);
result.Content = new ByteArrayContent(bytes);
result.Content.Headers.ContentDisposition = new...