大约有 40,000 项符合查询结果（耗时：0.0648秒） [XML]
javac is not recognized as an internal or external command, operable program or batch file [closed]
...nal or external command... error message.
In a nutshell, you have not installed Java correctly. Finalizing the installation of Java on Windows requires some manual steps. You must always perform these steps after installing Java, including after upgrading the JDK.
Environment variables and PATH
(...
Is there a way to detach matplotlib plots so that the computation can continue?
...
Use matplotlib's calls that won't block:
Using draw():
from matplotlib.pyplot import plot, draw, show
plot([1,2,3])
draw()
print('continue computation')
# at the end call show to ensure window won't close.
show()
Using interactive mode:
from...
How do I initialize an empty array in C#?
Is it possible to create an empty array without specifying the size?
13 Answers
13
...
Find full path of the Python interpreter?
...3 and it printed the correct executable. I also tried with no shebang and called the script with the python and python3 commands and it printed the correct executable.
– David Baucum
Oct 10 '19 at 13:18
...
How do I reattach to a detached mosh session?
...r (mosh [12345]).
And can run this command:
kill 12345
Also, to close all mosh connections you can:
kill `pidof mosh-server`
Note that if you are currently connected via mosh, this last command will also disconnect you.
...
Generating a PNG with matplotlib when DISPLAY is undefined
...
Important note: .use needs to be called before pyplot is imported. So if you are, for instance, just trying to import pyplot, you need to import matplotlib first, call use, and than import pyplot.
– seaotternerd
Nov 8 '1...
Most used parts of Boost [closed]
...filesystem
thread
lexical_cast
program_options (just brilliant!)
test (for all my unit testing needs).
String algorithms
String tokenizer
format (type-safe printf style string formatting)
smart ptrs
Boost was a massive help when I wrote my first cross-platform app - without it I really would have ...
How do I remove a project configuration in Visual Studio 2008?
... wish Visual Studio offered a quicker way to remove a configuration across all projects. If you have a dozen projects or so in a solution it's a pain to go through each of them and manually delete the configuration.
– Stefano Ricciardi
Aug 23 '11 at 9:43
...
What are the advantages of using a schema-free database like MongoDB compared to a relational databa
...ire several tables to properly represent in a relational db. This is especially useful if your data is immutable.
Deep query-ability. MongoDB supports dynamic queries on documents using a document-based query language that's nearly as powerful as SQL.
No schema migrations. Since MongoDB is schema-...
Error Code: 1005. Can't create table '…' (errno: 150)
...rror Code: 1005 -- there is a wrong primary key reference in your code
Usually it's due to a referenced foreign key field that does not exist. It might be you have a typo mistake, or check case it should be same, or there's a field-type mismatch. Foreign key-linked fields must match definitions exa...