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Regular expression to match DNS hostname or IP Address?
....linuxinsight.com/how_to_grep_for_ip_addresses_using_the_gnu_egrep_utility.html
egrep '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}'
Though the case doesn't account for values like 0 in the fist octet, and values greater than 254 (ip addres) or 255 (netmask). Maybe an additional if statement would hel...
Check for array not empty: any?
...hod empty? comes from the Array class
http://ruby-doc.org/core-2.0.0/Array.html#method-i-empty-3F
It's used to check if the array contains something or not. This includes things that evaluate to false, such as nil and false.
>> a = []
=> []
>> a.empty?
=> true
>> a = [nil, fa...
What is an Intent in Android?
...it below
http://developer.android.com/reference/android/content/Intent.html
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Example JavaScript code to parse CSV data
...but the lib can be used to open csv files locally in the browser using the HTML5 File API. Here's an example of it in action jquery-csv.googlecode.com/git/examples/file-handling.html.
– Evan Plaice
Nov 23 '12 at 22:09
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How to convert local time string to UTC?
...tc)
for details see:
see: https://blog.ganssle.io/articles/2019/11/utcnow.html
original answer (from 2010):
The datetime module's utcnow() function can be used to obtain the current UTC time.
>>> import datetime
>>> utc_datetime = datetime.datetime.utcnow()
>>> utc_dateti...
How can I set the max-width of a table cell using percentages?
...ostfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C...
What makes Scala's operator overloading “good”, but C++'s “bad”?
...g. http://james-iry.blogspot.com/2009/03/operator-overloading-ad-absurdum.html
None-the-less, there are differences between C++'s operator overloading and Scala's flexible method naming which, IMHO, make Scala both less abusable and more abusable.
In C++ the only way to get in-fix notation is usi...
Bash: infinite sleep (infinite blocking)
...ity will now actually sleep forever without looping: lists.gnu.org/archive/html/bug-gnulib/2020-02/msg00081.html
– Vladimir Panteleev
Feb 17 at 7:27
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AngularJS - How can I do a redirect with a full page load?
...
We had the same issue, working from JS code (i.e. not from HTML anchor). This is how we solved that:
If needed, virtually alter current URL through $location service. This might be useful if your destination is just a variation on the current URL, so that you can take advantage of ...
MySQL: Transactions vs Locking Tables
... in progress.
http://dev.mysql.com/doc/refman/5.0/en/innodb-locking-reads.html
START TRANSACTION WITH CONSISTENT SNAPSHOT will not do the trick for you, as other transactions can still come along and modify that row. This is mentioned right at the top of the link below.
If other sessions simu...