大约有 32,000 项符合查询结果（耗时：0.0425秒） [XML]
Why are there no ++ and -- operators in Python?
...you are dead right that today coding for the machine is mostly silly, back then it was the Human/Machine interface which was the bottleneck. It is hard to imagine working that slowly if you never had to.
– msw
Jan 17 '15 at 3:22
...
HTTPS setup in Amazon EC2
...ole.aws.amazon.com/ec2/ and click on the Security Groups link on the left, then create a new security group with also HTTPS available.
Then, just update the security group of a running instance or create a new instance using that group.
After these steps, your EC2 work is finished, and it's all an...
Getting Python error “from: can't read /var/mail/Bio”
...e python shell with the command python
and when you get these >>>
then run any python commands
share
|
improve this answer
|
follow
|
...
How to install Maven 3 on Ubuntu 18.04/17.04/16.10/16.04 LTS/15.10/15.04/14.10/14.04 LTS/13.10/13.04
...rminal and run the following:
sudo -i
Enter your password if necessary, then paste the following into the terminal:
export GOOD_RELEASE='precise'
export BAD_RELEASE="`lsb_release -cs`"
cd /etc/apt
sed -i '/natecarlson\/maven3/d' sources.list
cd sources.list.d
rm -f natecarlson-maven3-*.list*
apt...
Failed to install Python Cryptography package with PIP and setup.py
...g you should try is upgrading your pip!
If you aren't manylinux compatible then here's what you need to do:
You'll need a C compiler, libffi + its development headers, and openssl + its development headers.
Debian or Ubuntu derived distributions
apt-get install build-essential libssl-dev libffi-dev ...
Best Practice for Exception Handling in a Windows Forms Application?
... Exception(). Alternatively if you feel that you can add more information then wrap the original exception as an inner exception. But if you're catching an exception only to log it then definitely use throw;
Do not catch exceptions that you cannot handle, so don't worry about things like OutOfMemor...
How do I “git blame” a deleted line?
...he line was missing, because a merge commit from a branch got reverted and then merged back into it, effectively removing the line in question. The --full-history flag prevents skipping those commits.
share
|
...
Value of type 'T' cannot be converted to
...e explcitly cast to object and all object can be explcitly cast to string then there should exist a transitive rule that T can be explicitly cast to string. If you incorrectly perform the cast then a runime error should occur.
– P.Brian.Mackey
May 2 '18 at 23...
Android Studio with Google Play Services
...
Make sure you ./gradlew clean then ./gradlew build before android studio 2.x will pick up the dependancy. Otherwise you get a NoClassDef error
– user123321
Aug 27 '13 at 23:32
...
Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
...at the next read will be the end of the stream.
Consider this (and assume then next read will be at the end of the stream):
while(!inStream.eof()){
int data;
// yay, not end of stream yet, now read ...
inStream >> data;
// oh crap, now we read the end and *only* now the eof bit will ...