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Convert Unix timestamp to a date string
Is there a quick, one-liner way to convert a Unix timestamp to a date from the Unix command line?
11 Answers
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How to remove debugging from an Express app?
....io and connect-redis , but I do not know where the debugging mode comes from.
2 Answers
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Optimal number of threads per core
...just add that you should experiment and measure. Your program will differ from his, or mine, or anyone else's and only measurements of your own program's behaviour will answer your questions properly. The performance of parallel (or concurrent) programs is not an area where good conclusions can be...
How to paste in a new line with vim?
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Shortly after :help p it says:
:[line]pu[t] [x] Put the text [from register x] after [line] (default
current line). This always works |linewise|, thus
this command can be used to put a yanked block as
new lines.
:[line]pu[t]!...
Adding and removing style attribute from div with jquery
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You cannot remove the position or top attribute from the voltaic_holder element, because it does not have thos attributes. Those are css properties defined in the style attribute.
– Peter Olson
Mar 22 '11 at 17:02
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How to change string into QString?
...ing you mean std::string you can do it with this method:
QString QString::fromStdString(const std::string & str)
std::string str = "Hello world";
QString qstr = QString::fromStdString(str);
If by string you mean Ascii encoded const char * then you can use this method:
QString QString::fro...
How do I find the caller of a method using stacktrace or reflection?
...{
return "Reflection";
}
}
/**
* Get a stack trace from the current thread
*/
private static class ThreadStackTraceMethod extends GetCallerClassNameMethod {
public String getCallerClassName(int callStackDepth) {
return Thread.currentThread().getStackTrac...
memcpy() vs memmove()
...t) manner. Simplistically, it just loops over the data (in order), copying from one location to the other. This can result in the source being overwritten while it's being read.
Memmove does more work to ensure it handles the overlap correctly.
EDIT:
(Unfortunately, I can't find decent examples, ...
Understanding Linux /proc/id/maps
... changed using the mprotect system call.
offset - If the region was mapped from a file (using mmap), this is the offset in the file where the mapping begins. If the memory was not mapped from a file, it's just 0.
device - If the region was mapped from a file, this is the major and minor device numbe...
Difference between static class and singleton pattern?
...h of static methods is that singletons can implement interfaces (or derive from useful base classes, although that's less common, in my experience), so you can pass around the singleton as if it were "just another" implementation.
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