大约有 48,000 项符合查询结果（耗时：0.0720秒） [XML]
R memory management / cannot allocate vector of size n Mb
...e Matrix package for e.g.) for sparse matrices.
Keep all other processes and objects in R to a minimum when you need to make objects of this size. Use gc() to clear now unused memory, or, better only create the object you need in one session.
If the above cannot help, get a 64-bit machine with a...
Convert SVG to PNG in Python
...ry.
I made a minimalist "hello world" that renders SVG to a cairo
surface and writes it to disk:
import cairo
import rsvg
img = cairo.ImageSurface(cairo.FORMAT_ARGB32, 640,480)
ctx = cairo.Context(img)
## handle = rsvg.Handle(<svg filename>)
# or, for in memory SVG data:
handle= rsvg.Hand...
Django connection to PostgreSQL: “Peer authentication failed”
...oticed it had to do with my connection settings. Went back to settings.py, and saw I did not have a Host setup. Add localhost and voila.
My settings.py did not have a HOST for MySQL database, but I needed to add one for PostgreSQL to work.
In my case, I added localhost to the HOST setting and it w...
How do you convert an entire directory with ffmpeg?
How do you convert an entire directory/folder with ffmpeg via command line or with a batch script?
24 Answers
...
Preserve line breaks in angularjs
...ular-with-newlines {
white-space: pre-wrap;
}
This will use newlines and whitespace as given, but also break content at the content boundaries. More information about the white-space property can be found here:
https://developer.mozilla.org/en-US/docs/Web/CSS/white-space
If you want to break...
How do I paste multi-line bash codes into terminal and run it all at once?
...ode into terminal, but whenever I do, each line gets run as a separate command as soon as it gets pasted.
10 Answers
...
Difference between double and single curly brace in angular JS?
...gular world, i am bit confused with the use of double curly braces {{}}
and single curly braces{} or sometime no curly brace is used to include the expression like in the directives
...
Why are properties without a setter not serialized
I have a serializable class and one of the properties in my class generates a Guid in the getter. The property implements no setter and is ignores during serialization. Why is that and do I always have to implement a setter in order for my property to be serialized.
...
Checking in of “commented out” code [closed]
Ok, here is something that has caused some friction at my current job and I really didn't expect it to. Organized in house software development is a new concept here and I have drawn up a first draft of some coding guidelines.
...
Foreach loop, determine which is the last iteration of the loop
I have a foreach loop and need to execute some logic when the last item is chosen from the List , e.g.:
26 Answers
...