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Is there a regular expression to detect a valid regular expression?
...?\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)$/
.NET does not support recursion directly. (The (?1) and (?R) constructs.) The recursion would have to be converted to counting balanced groups:
^ # start of string
(?:
(?: [^?+*{}()[\...
Provide an image for WhatsApp link sharing
...to the current webpage address
<meta property="og:url" content="https://www.example.com/webpage/" />
Step 5: og:description
Maximum 65 characters
<meta property="og:description" content="description of your website/webpage">
Step 6: og:image
Image(JPG or PNG) with a size less than 30...
How to read data when some numbers contain commas as thousand separator?
...
"Preprocess" in R:
lines <- "www, rrr, 1,234, ttt \n rrr,zzz, 1,234,567,987, rrr"
Can use readLines on a textConnection. Then remove only the commas that are between digits:
gsub("([0-9]+)\\,([0-9])", "\\1\\2", lines)
## [1] "www, rrr, 1234, ttt \n r...
Parsing a CSV file using NodeJS
... of 10000 records and do some operation on each row. I tried using http://www.adaltas.com/projects/node-csv . I couldnt get this to pause at each row. This just reads through all the 10000 records. I need to do the following:
...
What is the difference between JDK and JRE?
...s less Disk space.
The JRE can be downloaded/supported freely from
https://www.java.com
It includes the JVM , Core libraries and other additional components to run applications and applets written in Java.
JDK (Java Development Kit)
It is a bundle of software that you can use to develop Java bas...
Why doesn't the height of a container element increase if it contains floated elements?
... This does not do what the OP was looking for: Forked jsfiddle.net/h0ceb5ra
– TecBrat
Jun 17 '16 at 15:39
1
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What is %2C in a URL?
...
Check out http://www.asciitable.com/
Look at the Hx, (Hex) column; 2C maps to ,
Any unusual encoding can be checked this way
+----+-----+----+-----+----+-----+----+-----+
| Hx | Chr | Hx | Chr | Hx | Chr | Hx | Chr |
+----+-----+----+-----...
Automatic text translation at MSDN pages - How to turn off?
...man?forum=msdnfeedback
This is due to the Accept-Language header:
http://www.w3.org/International/questions/qa-accept-lang-locales
So setting your browser to prefer English language websites should fix this problem. W3C has an overview how to do that on different browsers here:
http://www.w3.org...
How to create a memory leak in Java?
...om which you can't remove
str.intern();
(Unclosed) open streams ( file , network etc... )
try {
BufferedReader br = new BufferedReader(new FileReader(inputFile));
...
...
} catch (Exception e) {
e.printStacktrace();
}
Unclosed connections
try {
Connection conn = ConnectionF...
How to clear/remove observable bindings in Knockout.js?
...sest thing you'll find, but it only covers members of ko.utils: knockmeout.net/2011/04/utility-functions-in-knockoutjs.html
– Nick Daniels
Dec 28 '12 at 17:14
1
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