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Portable way to get file size (in bytes) in shell?
...ith single fork and single exec, but it uses a temporary file for the here-string. It can be made portable by replacing the here-string with POSX-compliant here-document. BTW note the exec in the subshell. Without that, Bash performs one fork for the subshell and another one for the command running ...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
...dn't use anything in any attribute without escaping with htmlspecialchars($string, ENT_QUOTES), so there's nothing special about server variables there.
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How do you check in python whether a string contains only numbers?
How do you check whether a string contains only numbers?
10 Answers
10
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Django : How can I see a list of urlpatterns?
...oin(p))" won't work because it's now a list of tuples instead of a list of strings, try "print(''.join(p[0]))".
– Cesar Canassa
Jul 9 '19 at 15:42
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What is the difference between Flex/Lex and Yacc/Bison?
...that.
Yacc and Bison are pretty closely compatible, though Bison has some extra tricks it can do.
You probably can't find legitimate copies of (the original, AT&T versions of) Lex and Yacc to install on Ubuntu. I wouldn't necessarily say it is impossible, but I'm not aware of such. Flex and ...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...r was std::copy.
I wrote a C++ SHA-2 implementation. In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512), and I loop 300 times. I measure times using Boost.timer. That 300 loop counter is enough to completely stabilize my results. I ran the test 5 times each, alternating...
How to remove all the occurrences of a char in c++ string
...use boost if that's an option for you, like:
#include <boost/algorithm/string.hpp>
boost::erase_all(str, "a");
All of this is well-documented on reference websites. But if you didn't know of these functions, you could easily do this kind of things by hand:
std::string output;
output.reserv...
Force CloudFront distribution/file update
...HTTP/1.0
Host: cloudfront.amazonaws.com
Authorization: [AWS authentication string]
Content-Type: text/xml
<InvalidationBatch>
<Path>/image1.jpg</Path>
<Path>/image2.jpg</Path>
<Path>/videos/movie.flv</Path>
<CallerReference>my-batch</Ca...
How to calculate the bounding box for a given lat/lng location?
... there is a bad code in your C# variant, for e.g.: public override string ToString(), it's very bad to override such a global method only for one purpose, better just to add another method, then overriding standard method, which can be used in other parts of application, not for the gis exac...
Mixing a PHP variable with a string literal
...an use braces to remove ambiguity when interpolating variables directly in strings.
Also, this doesn't work with single quotes. So:
echo '{$test}y';
will output
{$test}y
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