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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
..., this is one of the best summaries I've seen put together to date: http://www.vertabelo.com/blog/technical-articles/sql-joins
But back to this question - here are the results for the setdiff() code when using the OP's data:
> a1
a b
1 1 a
2 2 b
3 3 c
4 4 d
5 5 e
> a2
a b
1 1 a
2 2 b
3 ...
Is there a cross-domain iframe height auto-resizer that works?
...Frame" onload="AdjustIFrame('RefFrame');" class="RefFrame"
src="http://www.YourUrl.com"></iframe>
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DateTime.ToString(“MM/dd/yyyy HH:mm:ss.fff”) resulted in something like “09/14/2013 07.20.31.371”
...n, this time though archive.org: web.archive.org/web/20161030193739/http://www.heikniemi.net/…
– Håkon Seljåsen
Jan 20 '17 at 10:39
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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
...ModelState.AddModelErrors(dinner.GetRuleViolations());
Reference: http://www.wrox.com/WileyCDA/WroxTitle/Professional-ASP-NET-MVC-1-0.productCd-0470384611,descCd-ERRATA.html
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POST data in JSON format
...in.js"></script>
<script type="text/javascript" src="http://www.json.org/json2.js"></script>
<script type="text/javascript">
$(function() {
var frm = $(document.myform);
var dat = JSON.stringify(frm.serializeArray());
alert("I am about to P...
How do I use FileSystemObject in VBA?
...se guys have excellent examples of how to use the filesystem object http://www.w3schools.com/asp/asp_ref_filesystem.asp
<%
dim fs,fname
set fs=Server.CreateObject("Scripting.FileSystemObject")
set fname=fs.CreateTextFile("c:\test.txt",true)
fname.WriteLine("Hello World!")
fname.Close
set fname=n...
HTTP Basic Authentication credentials passed in URL and encryption
...uery. ie: A DNS request will be made to find the IP address of the domain (www.example.com). Please note that no other information will be sent via this request.
The browser or application will initiate a SSL connection with the IP address received from the DNS request. Certificates will be exchang...
How do I get the user agent with Flask?
...ng
'en-US'
Detailed information about 'accept_language" header: https://www.w3.org/International/questions/qa-lang-priorities
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Dependency Walker reports IESHIMS.DLL and WER.DLL missing?
...dency.
Where can I get them?
most dlls can be found at https://www.dll-files.com
I believe they are supposed to located in C:\Windows\System32\Wer.dll and C:\Program Files\Internet Explorer\Ieshims.dll
For me leshims.dll can be placed at C:\Windows\System32\. Context: windows 7 64b...
What is a regular expression which will match a valid domain name without a subdomain?
...t Guide for more information.
Feel free to try out the regex here: http://www.regexr.com/3abjr
ICANN keeps a list of tlds that have been delegated which can be used to see some examples of IDN domains.
Edit:
^(((?!-))(xn--|_{1,1})?[a-z0-9-]{0,61}[a-z0-9]{1,1}\.)*(xn--)?([a-z0-9][a-z0-9\-]{0,6...