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How can I randomize the lines in a file using standard tools on Red Hat Linux?
...swer) and prevent processing of backslashes. Using a fixed-length random string will prevent cut from deleting leading whitespace. Result: cat yourfile.txt | while IFS= read -r f; do printf "%05d %s\n" "$RANDOM" "$f"; done | sort -n | cut -c7-
– Richard Hansen
...
jQuery UI Sortable, then write order into a database
...t;/ul>
When you use the serialize option, it will create a POST query string like this: item[]=1&item[]=2 etc. So if you make use - for example - your database IDs in the id attribute, you can then simply iterate through the POSTed array and update the elements' positions accordingly.
For ...
How do I view cookies in Internet Explorer 11 using Developer Tools
...er. The same way you gan go here and paste knowledge how to get user agent string in this post. Wil it be an answer? Should it be downvoted? If you still disagree with me then please write what is a much better reason to downvote.
– pstarkov
Jan 31 '16 at 10:33...
Html5 data-* with asp.net mvc TextboxFor html attributes
...tBoxFor(
model => model.Country.CountryName,
new Dictionary<string, object> {
{ "data-url", Url.Action("CountryContains", "Geo") }
}
) %>
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Assign same value to multiple variables at once?
...
actually means $a = ( $b = ( $c = $d ) )
PHP passes primitive types int, string, etc. by value and objects by reference by default.
That means
$c = 1234;
$a = $b = $c;
$c = 5678;
//$a and $b = 1234; $c = 5678;
$c = new Object();
$c->property = 1234;
$a = $b = $c;
$c->property = 5678;
// $...
Resetting a multi-stage form with jQuery
...ut.val('') on an input with a default value of 50 would set it to an empty string, whereas calling myform.reset() would reset it to its initial value of 50.
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How to pretty print XML from the command line?
...t sys;import xml.dom.minidom;s=sys.stdin.read();print(xml.dom.minidom.parseString(s).toprettyxml())'
saxon-lint
You need saxon-lint:
echo '<root><foo a="b">lorem</foo><bar value="ipsum" /></root>' |
saxon-lint --indent --xpath '/' -
saxon-HE
You need saxon-HE...
Keyboard shortcut to paste clipboard content into command prompt window (Win XP) [closed]
...es, I am a C++ programmer).
#EscapeChar \
; Paste in command window.
^V::
StringReplace clipboard2, clipboard, \r\n, \n, All
SendInput {Raw}%clipboard2%
return
The advantage of using SendInput is that
it doesn't rely on the command prompt system menu having an "Alt+Space E P" menu item to do th...
Rails :include vs. :joins
...ment belongs_to a User.
The User model has the following attributes: Name(string), Age(integer). The Comment model has the following attributes:Content, user_id. For a comment a user_id can be null.
Joins:
:joins performs a inner join between two tables. Thus
Comment.joins(:user)
#=> <A...
No grammar constraints (DTD or XML schema) detected for the document
...cument, including:
a list of legal elements
special characters
character strings
and a lot more
E.g.
<!DOCTYPE nameOfYourRootElement
[
<!ELEMENT nameOfYourRootElement (nameOfChildElement1,nameOfChildElement2)>
<!ELEMENT nameOfChildElement1 (#PCDATA)>
<!ELEMENT nameOfChildEleme...