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Iterate an iterator by chunks (of n) in Python? [duplicate]
...rn
yield itertools.chain((first_el,), chunk_it)
Some benchmarks: http://pastebin.com/YkKFvm8b
It will be slightly more efficient only if your function iterates through elements in every chunk.
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
...m the command-line switch but I have been able to do it just by setting my HTTP_PROXY environment variable. (Note that case seems to be important). I have a batch file that has a line like this in it:
SET HTTP_PROXY=http://%USER%:%PASSWORD%@%SERVER%:%PORT%
I set the four referenced variables befo...
Hidden features of C
...iltin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
see: http://kerneltrap.org/node/4705
What I like about this is that it also adds some expressiveness to some functions.
void foo(int arg)
{
if (unlikely(arg == 0)) {
do_this();
return;
}
do_t...
Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
... complies to the EU cookie law.
Check out this plunk to see it in action: http://plnkr.co/MwH6xwGK00u3CFOTzepK
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Download multiple files with a single action
...
HTTP does not support more than one file download at once.
There are two solutions:
Open x amount of windows to initiate the file downloads (this would be done with JavaScript)
preferred solution create a script to zip the...
Python integer division yields float
...eUploader: {
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 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What is context in _.each(list, iterator, [context])?
... // someOtherArray.
}, someOtherArray);
Working Example: http://jsfiddle.net/a6Rx4/
It uses the number from each member of the Array being iterated to get the item at that index of someOtherArray, which is represented by this since we passed it as the context parameter.
If you do...
How can javascript upload a blob?
...$('#fileInput').get(0).files.item(0); // instance of File
var xhr = new XMLHttpRequest();
xhr.open('POST', '/upload.php', true);
xhr.onload = function(e) { ... };
xhr.send(file);
Granted, if you are replacing a traditional HTML multipart form with an "AJAX" implementation (that is, your back-end c...
WatiN or Selenium? [closed]
...s that Selenium has support for different browsers (not just IE or FF, see http://seleniumhq.org/about/platforms.html#browsers.
Also, Selenium has a remote control server (http://seleniumhq.org/projects/remote-control/), which means that you don't need to run the browser on the same machine the tes...
Use cases for NoSQL [closed]
...cs, Logging and Full Text search. These articles are all well worth a read http://www.mongodb.com/use-cases
There's also a great write-up on which NoSQL database is best suited to which type of project: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis
...