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Is inline assembly language slower than native C++ code?
...times can automatically use some MMX/SIMDx instructions by themselves, and if you don't use them you simply can't compare (other answers already reviewed your assembly code very well).
Just for loops this is a short list of loop optimizations of what is commonly checked for by a compiler (do you thi...
Wait for a process to finish
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Who would have known that tail would do this.
– ctrl-alt-delor
Jul 30 '17 at 15:06
8
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How to analyze a java thread dump?
... some code that is locked, a genuine contention has occurred. The JVM must now create (or inflate) the monitor object to hold the second thread and arrange for a signaling mechanism to coordinate access to the code section. This monitor is now called an inflated monitor.
Here is a more in-depth exp...
How does free know how much to free?
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When you call malloc(), you specify the amount of memory to allocate. The amount of memory actually used is slightly more than this, and includes extra information that records (at least) how big the block is. You can't (reliably) access that other informat...
ruby 1.9: invalid byte sequence in UTF-8
...?)"/i) instead of nokogiri/hpricot (major speedup). The problem is that I now receive a lot of " invalid byte sequence in UTF-8 " errors.
From what I understood, the net/http library doesn't have any encoding specific options and the stuff that comes in is basically not properly tagged.
What ...
How do I access command line arguments in Python?
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Python tutorial explains it:
import sys
print(sys.argv)
More specifically, if you run python example.py one two three:
>>> import sys
>>> print(sys.argv)
['example.py', 'one', 'two', 'three']
sh...
What are the most common naming conventions in C?
... In point six I prefer to use static and skip the module prefix, so if gtk_widget_show() was a function with file scope it would become simply widget_show() with static storage class added.
– August Karlstrom
Aug 15 '13 at 14:28
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Only read selected columns
...ep", "Oct", "Nov", "Dec"), class = "data.frame",
row.names = c(NA, -3L))
If the number of columns is not known beforehand, the utility function count.fields will read through the file and count the number of fields in each line.
## returns a vector equal to the number of lines in the file
count.f...
How to drop unique in MySQL?
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Note that you may not be able to drop a key like this if a foreign key to the email column exists (error 150) . To get this to work, drop the foreign key first, then drop the index, and recreate the foreign key afterwards. e.g ALTER TABLE fuinfo DROP foreign key fk_name_for_em...
Creating a new dictionary in Python
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Is there any difference between dict() and {}? Or do people just prefer one over the other?
– Matt
Mar 2 '12 at 17:13
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