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Why are Python lambdas useful? [closed]
...ut lambda functions? Like
lambda x: x**2 + 2*x - 5
Those things are actually quite useful. Python supports a style of programming called functional programming where you can pass functions to other functions to do stuff. Example:
mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])...
How to join int[] to a character separated string in .NET?
...formance. Join method needs to know the size of the data to effectively preallocate necessary amount of memory.
Here is a part of internal implementation of String.Join method:
// length computed from length of items in input array and length of separator
string str = FastAllocateString(length);
f...
sed edit file in place
... out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a different way?
...
Creating an iframe with given HTML dynamically
...cross browsers and it's only over a year after I answered that someone actually complained. No it's not cross browser. But let's be honest if you want code quality there is probably a much cleaner solution than using a iframe in the first place :)
– GillesC
N...
Open new Terminal Tab from command line (Mac OS X)
...egistry as CLI ttab, which also supports iTerm2:
If you have Node.js installed, simply run:
npm install -g ttab
(depending on how you installed Node.js, you may have to prepend sudo).
Otherwise, follow these instructions.
Once installed, run ttab -h for concise usage information, or man ttab to...
Best practices for reducing Garbage Collector activity in Javascript
I have a fairly complex Javascript app, which has a main loop that is called 60 times per second. There seems to be a lot of garbage collection going on (based on the 'sawtooth' output from the Memory timeline in the Chrome dev tools) - and this often impacts the performance of the application.
...
Ignore with CSS?
...'t answer the question exactly as stated, but it does achieve the goal in all modern browsers.
– Andrew Lundin
Jul 25 '14 at 20:05
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$location / switching between html5 and hashbang mode / link rewriting
...ationHashbangInHTML5Url).
In order to simulate URL rewriting you must actually set html5mode to true and decorate the $sniffer class as follows:
$provide.decorator('$sniffer', function($delegate) {
$delegate.history = false;
return $delegate;
});
I will now explain this in more detail:
Hash...
Search stops working for “Entire Solution”
...
I was sceptical. I mean really sceptical. So, I tried it. I was hitting ctrl-creak as many times as I possibly could...and it worked..I mean....it really worked...Holy Crap!
– James Wiseman
May 15 '12 at 14:37
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How to send email to multiple recipients using python smtplib?
...
This really works, I spent a lot of time trying multiple variants.
import smtplib
from email.mime.text import MIMEText
s = smtplib.SMTP('smtp.uk.xensource.com')
s.set_debuglevel(1)
msg = MIMEText("""body""")
sender = 'me@example.c...