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Hidden features of Perl?
...he "bool" quasi operator, that return 1 for true expressions and the empty string for false:
$ perl -wle 'print !!4'
1
$ perl -wle 'print !!"0 but true"'
1
$ perl -wle 'print !!0'
(empty line)
Other interesting stuff: with use overload you can overload string literals and numbers (and for example...
Convert Go map to json
I tried to convert my Go map to a json string with encoding/json Marshal, but it resulted in a empty string.
3 Answers
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How do I get python's pprint to return a string instead of printing?
... the documentation:
Return the formatted representation of object as a string. indent,
width and depth will be passed to the PrettyPrinter constructor as
formatting parameters.
Example:
>>> import pprint
>>> people = [
... {"first": "Brian", "last": "Kernighan"},
.....
How can I make Array.Contains case-insensitive on a string array?
I am using the Array.Contains method on a string array. How can I make that case-insensitive?
4 Answers
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Best Practice: Access form elements by HTML id or name attribute?
...nterface of an HTMLFormElement which has caller getter any namedItem(in DOMString name);. More at whatwg.org/specs/web-apps/current-work/multipage/…
– Anurag
Mar 13 '10 at 3:49
1...
How can I match a string with a regex in Bash?
...
if [[ $STR == *pattern* ]]
then
echo "It is the string!"
else
echo "It's not him!"
fi
Works for me! GNU bash, version 4.3.11(1)-release (x86_64-pc-linux-gnu)
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jQuery: serialize() form and other parameters
...
serialize() effectively turns the form values into a valid querystring, as such you can simply append to the string:
$.ajax({
type : 'POST',
url : 'url',
data : $('#form').serialize() + "&par1=1&par2=2&par3=232"
}
...
What does “%.*s” mean in printf?
...pecifier/precision to printf(), rather than hard coding it into the format string, i.e.
void f(const char *str, int str_len)
{
printf("%.*s\n", str_len, str);
}
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
... however, make sure to look for the difference between JSON.parse and JSON.stringify unless you already know.
– usefulBee
Sep 2 '15 at 14:19
2
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Activity restart on rotation Android
... android:configChanges="orientation|keyboardHidden"
android:label="@string/app_name">
or for Android 3.2 (API level 13) and newer:
<activity android:name=".MyActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:label="@string/app_name">
The...