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Scraping html tables into R data frames using the XML package
... I get an error "Scripts should use an informative User-Agent string with contact information, or they may be IP-blocked without notice." [2] " Is there a way round this to implement this method?
– pssguy
Jan 17 '12 at 20:59
...
What's the best way to get the last element of an array without deleting it?
...))[0]; || NULL | NULL | NULL | string(1) "d" | string(1) "c" | int(99) | int(99999) || NULL | NULL | NULL | string(1) "d" | string(1) "c" | int(99) | int(99999) || NULL | NULL | NULL |...
Remove excess whitespace from within a string
I receive a string from a database query, then I remove all HTML tags, carriage returns and newlines before I put it in a CSV file. Only thing is, I can't find a way to remove the excess white space from between the strings.
...
iOS Detect 3G or WiFi
...der] carrierName];
if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyGPRS]) {
NSLog(@"2G");
} else if ([netinfo.currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyEdge]) {
NSLog(@"2G");
} else if ([netinfo.currentRadioAcces...
jQuery post() with serialize and extra data
...to add additional params to the array,
call $.param(arr) to get serialized string, which could be used as jquery ajax's data param.
Example code:
var paramArr = $("#loginForm").serializeArray();
paramArr.push( {name:'size', value:7} );
$.post("rest/account/login", $.param(paramArr), function(resu...
Print all but the first three columns
...me solutions:
(these solutions even preserve trailing spaces from original string)
$ echo -e ' 1 2\t \t3 4 5 6 7 \t 8\t ' |
awk -v n=3 '{ for ( i=1; i<=n; i++) { sub("^["FS"]*[^"FS"]+["FS"]+","",$0);} } 1 ' |
sed 's/ /./g;s/\t/->/g;s/^/"/;s/$/"/'
"4...5...6.7.->.8->."
$ e...
CORS - What is the motivation behind introducing preflight requests?
...change this), but in a world with CORS the preflight mechanism provides an extra 'sanity check' so that clients and servers don't break because the underlying rules of the web have changed.
Servers that are still under development, but which contain a lot of old code and for which it's not feasible/...
Daylight saving time and time zone best practices [closed]
...arated and treated differently (an analogy: arrays of bytes and character strings).
The issue is confusing because we speak of these types events interchangeably, and because the civil times are subject to political changes. The problem (and the need to distinguish these concepts) becomes more evi...
Pushing an existing Git repository to SVN
I've been doing all my work in Git and pushing to GitHub. I've been very happy with both the software and the site, and I have no wish to change my working practices at this point.
...
How to add extra info to copied web text
...nswer: [stackoverflow.com/a/4177234/4177020] And now you can replace this string var selection = window.getSelection(); by this one: var selection = getSelectionHtml();
– Dzmitry Kulahin
Oct 2 '19 at 16:08
...