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Count number of matches of a regex in Javascript
...wer
The problem with your initial code is that you are missing the global identifier:
>>> 'hi there how are you'.match(/\s/g).length;
4
Without the g part of the regex it will only match the first occurrence and stop there.
Also note that your regex will count successive spaces twice:
...
Django connection to PostgreSQL: “Peer authentication failed”
...I had been using MySQL database no problem. I am new to PostgreSQL, but decided to switch because the host I ultimately plan to use for this project does not have MySQL.
...
How to monitor the memory usage of Node.js?
...48, heapUsed: 4528072 }
> process.memoryUsage(); // Memory usage after idling
{ rss: 23293952, heapTotal: 11803648, heapUsed: 4753376 }
In this simple example, you can see that allocating an array of 10M elements consumers approximately 80MB (take a look at heapUsed).
If you look at V8's sourc...
Clojure differences between Ref, Var, Agent, Atom, with examples
...duce a short snip-it of the motivations for each:
start by watching this video on the notion of Identity and/or studying here.
Refs are for Coordinated Synchronous access to "Many Identities".
Atoms are for Uncoordinated synchronous access to a single Identity.
Agents are for Uncoordinated asynch...
Why is a 3-way merge advantageous over a 2-way merge?
...
"But how would it know what to do with the differences?" Didn't get it. If it can already see the differences between the two files (without reference to the original), why can't it apply both changes serially in increasing order of files' timestamps? That is: It starts off with my ...
How to Get the Title of a HTML Page Displayed in UIWebView?
...
For those who just scroll down to find the answer:
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSString *theTitle=[webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}
This will always work as there is no way to turn off Javascript in UIWebView.
...
How to return a result (startActivityForResult) from a TabHost Activity?
...
Oh, god! After spending several hours and downloading the Android sources, I have finally come to a solution.
If you look at the Activity class, you will see, that finish() method only sends back the result if there is a mParent property set to null. Otherwise the result is lost.
publi...
Best way to find the intersection of multiple sets?
...utput: set([1])
However, many Python programmers dislike it, including Guido himself:
About 12 years ago, Python aquired lambda, reduce(), filter() and map(), courtesy of (I believe) a Lisp hacker who missed them and submitted working patches. But, despite of the PR value, I think these featur...
What is the right way to POST multipart/form-data using curl?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?
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I didn't know that unsigned types are available only in MySQL, this is a huge advantage of MySQL over other RDBMS. Anything changed since the day this answer posted?
– biox
Sep 20 '13 at 17...