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Why is Go so slow (compared to Java)?
...these and found them to be mostly OK. I think the results can be used as a base for estimations.
– Agoston Horvath
Apr 7 '16 at 15:11
...
How to check file MIME type with javascript before upload?
...e as fallback
break;
}
Accept or reject file uploads as you like based on the MIME types expected.
Demo
Here is a working demo for local files and remote files (I had to bypass CORS just for this demo). Open the snippet, run it, and you should see three remote images of different types...
C++, What does the colon after a constructor mean? [duplicate]
...aid, it's an initialisation list. You can use it for two things:
Calling base class constructors
Initialising member variables before the body of the constructor executes.
For case #1, I assume you understand inheritance (if that's not the case, let me know in the comments). So you are simply ca...
How to read a single character from the user?
...
Also worth trying is the readchar library, which is in part based on the ActiveState recipe mentioned in other answers.
Installation:
pip install readchar
Usage:
import readchar
print("Reading a char:")
print(repr(readchar.readchar()))
print("Reading a key:")
print(repr(readchar....
How to get the list of all printers in computer
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Manually raising (throwing) an exception in Python
... Python!') # Don't! If you catch, likely to hide bugs.
For example:
def demo_bad_catch():
try:
raise ValueError('Represents a hidden bug, do not catch this')
raise Exception('This is the exception you expect to handle')
except Exception as error:
print('Caught this...
How to install PyQt4 on Windows using pip?
...n 3.5, etc.
Since Qt is a more complicated system with a compiled C++ codebase underlying the python interface it provides you, it can be more complex to build than just a pure python code package, which means it can be hard to install it from source.
Make sure you grab the correct Windows wheel f...
jumpserver-华为云免费堡垒机解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...bak
mv * /etc/yum.repos.d/bak/
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
yum clean all
yum makecache
如果是REHL需要修改
1.删除redhat原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps
2.下载yum安装文件
wget http://mirrors.163.com/centos/6.7/os/x86_64/Pack...
How to JSON serialize sets?
...de disappeared
updated the call to the parents' default with super()
using base64 to serialize the bytes type into str (because it seems that bytes in python 3 can't be converted to JSON)
from decimal import Decimal
from base64 import b64encode, b64decode
from json import dumps, loads, JSONEncoder...
Convert string to integer type in Go?
...d strconv.ParseInt() which give greater flexibility as you can specify the base and bitsize for example. Also as noted in the documentation of strconv.Atoi():
Atoi is equivalent to ParseInt(s, 10, 0), converted to type int.
Here's an example using the mentioned functions (try it on the Go Play...