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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
... Or that memory just has been freed by HeapFree().
Disclaimer: the table is from some notes I have lying around - they may not be 100% correct (or coherent).
Many of these values are defined in vc/crt/src/dbgheap.c:
/*
* The following values are non-zero, constant, odd, large, and atypica...
Is there any way to put malicious code into a regular expression?
... spent begging the operating system for more space, and the attendant page-table set-up costs, can sometimes nudge the balancing scale further the other way and make the conversion from time to space less attractive than it would be.
– tchrist
Jan 19 '11 at 18:...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...
f = Import["http://thwartedglamour.files.wordpress.com/2010/06/my-coffee-table-1-sa.jpg"]
f = ImageResize[f, ImageDimensions[f][[1]]/4]
g = MedianFilter[ColorConvert[f, "Grayscale"], 2]
h = DeleteSmallComponents[Thinning[
Binarize[ImageSubtract[Dilation[g, 1], Erosion[g, 1]]]]]
convexvert = C...
What is the difference between Elastic Beanstalk and CloudFormation for a .NET project?
...ts (production and staging), a couple of ElasticCache clusters, a DyanmoDB table, and then the proper DNS in Route53. I then upload this template to AWS, walk away, and 45 minutes later everything is ready and waiting. Since it's just a plain-text JSON file, I can stick it in my source control whi...
Moving matplotlib legend outside of the axis makes it cutoff by the figure box
...me!):
Code:
#==================================================
# Plot table
colmap = [(0,0,1) #blue
,(1,0,0) #red
,(0,1,0) #green
,(1,1,0) #yellow
,(1,0,1) #magenta
,(1,0.5,0.5) #pink
,(0.5,0.5,0.5) #gray
,(0.5,0,0) #brown
...
Microsoft Roslyn vs. CodeDom
...e, we've exposed public APIs on top:
Parser -> Syntax Tree API
Symbol Table/Metadata Import -> Symbol API
Binder -> Binding and Flow Analysis APIs
IL Emitter -> Emit API
Roslyn can be used as a sophisticated C# and VB source code generator, but that's where the similarity to CodeDom ...
Chaining multiple filter() in Django, is this a bug?
...ay suspect. It is how the WHERE and JOIN is placed.
Example1 (same joined table) :
(example from https://docs.djangoproject.com/en/dev/topics/db/queries/#spanning-multi-valued-relationships)
Blog.objects.filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)
This will give you ...
Is it safe to parse a /proc/ file?
...s even less consistent than that. It's atomic only within each row of the table. To see this, look at listening_get_next() in net/ipv4/tcp_ipv4.c and established_get_next() just below in the same file, and see the locks they take out on each entry in turn. I don't have repro code handy to demonst...
Speed up the loop operation in R
... much guessing you eliminate.
Next, consider optimized packages: The data.table package can produce massive speed gains where its use is possible, in data manipulation and in reading large amounts of data (fread).
Next, try for speed gains through more efficient means of calling R:
Compile your...
What do the terms “CPU bound” and “I/O bound” mean?
... 363.64 166.67 2.18
MARK RESULTS TABLE
Mark Name MultiCore SingleCore Scaling
----------------------------------------------- ---------- ---------- ----------
CoreMark-PRO 18743....