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Why should I use a pointer rather than the object itself?
...st shows how many bad C++ programmers there are.
In a sense, you have two questions bundled up into one. The first is when should we use dynamic allocation (using new)? The second is when should we use pointers?
The important take-home message is that you should always use the appropriate tool for...
How to get a variable value if variable name is stored as string?
...our script using /bin/sh? If so, try using /bin/bash instead. From Debian Squeeze onwards, /bin/sh was changed to be a symlink for dash instead of bash. dash doesn't support this particular syntax and will output a Bad substitution error.
– Phil Ross
Aug 8 '13 ...
Error: free(): invalid next size (fast):
...ith free() when the vector was not large enough. At least care to read the question first.
– gyan
Jan 26 '19 at 22:31
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Is there anything like inotify on Windows?
...nts api.
They're all subtly different from one another, and they all have questionable reliability in edge cases. In general, you can't depend on these apis for a complete view of all changes 100% of the time. Most people using file system monitoring combine it with periodic scans to compensate for...
HTTP error 403 in Python 3 Web Scraping
...ily detected). Try setting a known browser user agent with:
from urllib.request import Request, urlopen
req = Request('http://www.cmegroup.com/trading/products/#sortField=oi&sortAsc=false&venues=3&page=1&cleared=1&group=1', headers={'User-Agent': 'Mozilla/5.0'})
webpage = urlop...
How to extract a floating number from a string [duplicate]
...ng stuff in the following answer of mine that I did for a previous similar question:
https://stackoverflow.com/q/5929469/551449
In this answer, I proposed a pattern that allows a regex to catch any kind of number and since I have nothing else to add to it, I think it is fairly complete
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How do I get the base URL with PHP?
...Try this:
<?php echo "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']; ?>
Learn more about the $_SERVER predefined variable.
If you plan on using https, you can use this:
function url(){
return sprintf(
"%s://%s%s",
isset($_SERVER['HTTPS']) && $_SERVER['HTTP...
Echo tab characters in bash script
...t as well for the example you're asking about; you just need to put double quotes around the argument:
echo "[$res]"
as kmkaplan wrote (two and a half years ago, I just noticed!). The problem with your original commands:
res=' 'x # res = "\t\tx"
echo '['$res']' # expect [\t\tx]
isn'...
Count how many files in directory PHP
... Although useful it wasn't very easy to read when i asked the question. Saying that though, I have improved my knowledge of php. I have no upvoted this.
– Bradly Spicer
Nov 4 '13 at 16:11
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How to play an android notification sound
...title controller already set. What does it mean?
– Deqing
May 11 '14 at 11:20
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