大约有 41,000 项符合查询结果（耗时：0.0468秒） [XML]
Tools for analyzing performance of a Haskell program
...
how to find out why this solution is so slow. Are there any commands that tell me where most of the computation-time is spend so I know which part of my haskell-program is slow?
Precisely! GHC provides many excellent tools, including:
runtime statistics
time profiling
heap profiling
t...
Why am I getting a “401 Unauthorized” error in Maven?
...f you supply the wrong credentials (password etc). You also get an error (and off the top of my head is also a 401) if you try to publish something to a releases repository and that version already exists in the repository. So you might find that by publishing from the command line it works, but t...
How to convert an int to a hex string?
...e chr function.
You seem to be mixing decimal representations of integers and hex representations of integers, so it's not entirely clear what you need. Based on the description you gave, I think one of these snippets shows what you want.
>>> chr(0x65) == '\x65'
True
>>> hex(65...
How to return PDF to browser in MVC?
...e generating this PDF dynamically, it may be better to use a MemoryStream, and create the document in memory instead of saving to file. The code would be something like:
Document document = new Document();
MemoryStream stream = new MemoryStream();
try
{
PdfWriter pdfWriter = PdfWriter.GetInst...
Why can't variable names start with numbers?
...names are "numbers+alpha that don't parse to a valid numeric designation", and that's just silly.
– eaolson
Oct 11 '09 at 3:56
4
...
How to change the docker image installation directory?
...ker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base directory (where container and images go) using the -goption when starting the Docker daemon. (check docker --help).
You ...
Windows Forms - Enter keypress activates submit button?
How can I capture enter keypresses anywhere on my form and force it to fire the submit button event?
9 Answers
...
How can I convert a character to a integer in Python, and viceversa?
...
Use chr() and ord():
>>> chr(97)
'a'
>>> ord('a')
97
share
|
improve this answer
|
follow...
Compare two folders which has many files inside contents
...
To get summary of new/missing files, and which files differ:
diff -arq folder1 folder2
a treats all files as text, r recursively searched subdirectories, q reports 'briefly', only when files differ
...
Ruby ampersand colon shortcut [duplicate]
...
Your question is wrong, so to speak. What's happening here isn't "ampersand and colon", it's "ampersand and object". The colon in this case is for the symbol. So, there's & and there's :foo.
The & calls to_proc on the object, and passes it as a block to the method. In Rails, to_proc is im...