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C/C++ NaN constant (literal)?
...trtod("NAN(n-char-sequence)",0) counterparts and NAN for assignments.
// Sample C code
uint64_t u64;
double x;
x = nan("0x12345");
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);
x = -strtod("NAN(6789A)",0);
memcpy(&u64, &x, sizeof u64); printf("(%" PRIx64 ")\n", u64);...
In Python, how can you load YAML mappings as OrderedDicts?
... construct_mapping)
return yaml.load(stream, OrderedLoader)
# usage example:
ordered_load(stream, yaml.SafeLoader)
For serialization, I don't know an obvious generalization, but at least this shouldn't have any side effects:
def ordered_dump(data, stream=None, Dumper=yaml.Dumper, **kwds):
...
How can I use a DLL file from Python?
...
For ease of use, ctypes is the way to go.
The following example of ctypes is from actual code I've written (in Python 2.5). This has been, by far, the easiest way I've found for doing what you ask.
import ctypes
# Load DLL into memory.
hllDll = ctypes.WinDLL ("c:\\PComm\\ehlapi3...
jQuery table sort
...uld work if converting the text to uppercase or lower case and then check & compare. Eg: Instead of $.text([a]) == $.text([b]) using $.text([a]).toUpperCase() == $.text([b]).toUpperCase() will fix it.
– NBK
Dec 3 '12 at 8:26
...
How do I get the name of the active user via the command line in OS X?
...if you are ssh'ed into a machine and want to see if a user is logged on locally. If they are not, the command will return "root".
– Tim Dearborn
Jan 15 '16 at 1:17
add a comme...
How do you loop in a Windows batch file?
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Conditionally perform a command several times.
syntax-FOR-Files
FOR %%parameter IN (set) DO command
syntax-FOR-Files-Rooted at Path
FOR /R [[drive:]path] %%parameter IN (set) DO command
syntax-FOR-Folders
FOR /D %%paramete...
How to calculate the CPU usage of a process by PID in Linux from C?
...m all again. You can now calculate the CPU usage of the process over the sampling time, with:
user_util = 100 * (utime_after - utime_before) / (time_total_after - time_total_before);
sys_util = 100 * (stime_after - stime_before) / (time_total_after - time_total_before);
Make sense?
...
What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
...
serve current directory from command line
...
@Deviljho if you are running on Mac or Linux, just add an ampersand at the end of the command to send it to the background: ruby -run -e httpd . -p 9090 & If you want to bring it back to the foreground, use fg.
– Daniel Perez Alvarez
Nov 2...
How to resize superview to fit all subviews with autolayout?
... If you want to use it on a UITableViewCell (to determine row height for example) then you should call it against your cell contentView and grab the height.
Further considerations exist if you have one or more UILabel's in your view that are multiline. For these it is imperitive that the preferr...