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Use of 'use utf8;' gives me 'Wide character in print'
...single byte characters. There are four bytes in your string as you can see from this:
$ perl -E 'say join ":", map { ord } split //, "鸡\n";'
233:184:161:10
The first three bytes make up your character, the last one is the line-feed.
The call to print sends these four characters to STDOUT. Your...
HTTP Content-Type Header and JSON
...he browser doesn't care what it is. The browser just returns you the data from the AJAX call. If you want to parse it as JSON, you need to do that on your own.
The header is there so your app can detect what data was returned and how it should handle it. You need to look at the header, and if it...
Can we have multiple in same ?
...
Yes. From the DTD
<!ELEMENT table
(caption?, (col*|colgroup*), thead?, tfoot?, (tbody+|tr+))>
So it expects one or more. It then goes on to say
Use multiple tbody sections when rules
are needed between groups o...
How to read the mode field of git-ls-tree's output
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From the Git index-format.txt file, regarding the mode:
32-bit mode, split into (high to low bits)
4-bit object type
valid values in binary are 1000 (regular file), 1010 (symbolic link)
and 1110 (gitlink)
...
What is the best way to implement constants in Java? [closed]
...shorthand isn't worth the possible confusion as to where the constant came from, when reading long code, MaxSeconds.MAX_SECONDS may be easier to follow then going up and looking at the imports.
– MetroidFan2002
Sep 15 '08 at 20:35
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How to properly check if std::function is empty in C++11?
...eaning to the phrase "implicit conversion", and it is distinctly different from "contextual conversion to bool," which also has a very specific meaning. There is no "Is-a" relationship here. I understand that beginners probably don't need to know the difference between implicit/explicit/contextual...
Replacing H1 text with a logo image: best method for SEO and accessibility?
...y of images being disabled in the browser. So, rather than indent the text from the link off the page, I cover it by absolutely positioning the <span> to the full width and height of the <a> and using z-index to place it above the link text in the stacking order.
The price is one empty ...
Difference between passing array and array pointer into function in C
... an operand of either sizeof or &, so its type is implicitly converted from "10-element array of int" to "pointer to int" according to 6.2.3.1/3. Thus, foo will receive a pointer value, rather than an array value.
Because of 6.7.5.3/7, you can write foo as
void foo(int a[]) // or int a[10]
{...
Is #pragma once part of the C++11 standard?
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If your code includes some file from different locations through symbolic links or weird mounts then it is already not portable. Therefore arguing that pragma once can not portably implement something that is inherently not portable (and shouldn't be even c...
How to get a specific output iterating a hash in Ruby?
...b, :d] => [2, 3, 4]
# [:a, :e] => 5
# [:f] => 6
Here is example from the question itself:
hash = {
1 => ["a", "b"],
2 => ["c"],
3 => ["a", "d", "f", "g"],
4 => ["q"]
}
hash.each(recursive=false) do |key, value|
puts "#{key} => #{value}"
...