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How to validate an email address using a regular expression?
...is its true owner. People sign others up to mailing lists this way all the time. Fixing that requires a fancier kind of validation that involves sending that address a message that includes a confirmation token meant to be entered on the same web page as was the address.
Confirmation tokens are th...
Problems installing the devtools package
...hing I would add is a '-y' at the end so you don't have to say 'yes'. No time for consent these days.
– wordsforthewise
Dec 12 '17 at 16:34
2
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Python strftime - date without leading 0?
When using Python strftime , is there a way to remove the first 0 of the date if it's before the 10th, ie. so 01 is 1 ? Can't find a % thingy for that?
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Why is === faster than == in PHP?
...ntegers [1, 100]
the two variables were generated and compared one million times
the tests were run 10 times
And here are the results:
$a == $b $a === $b
--------- ---------
0.765770 0.762020
0.753041 0.825965
0.770631 0.783696
0.787824 0.781129
0.757506 0.796142
0.773537 0.796734
0...
How do I use vim registers?
...rrent line. Furthermore, we can type @@ to repeat, or 100@m to do this 100 times! Life's looking pretty good.
At this point you should be saying, "But what does this have to do with registers?"
Excellent point. Let's investigate what is in the contents of the m register by typing "mp. We then get th...
What is PECS (Producer Extends Consumer Super)?
...hing to a Collection<? extends Thing>, because you cannot know at runtime which specific subtype of Thing the collection holds.)
Case 2: You want to add things to the collection.
Then the list is a consumer, so you should use a Collection<? super Thing>.
The reasoning here is that unli...
Why do stacks typically grow downwards?
...nd me. I still remember the TRS-80 model 3 method for getting the date and time being to ask the user for it at boot time. Having a memory scanner to set the upper limit of memory was considered state of the art back in the day :-) Can you imagine what would happen if Windows asked the time, or how ...
Why does C++ compilation take so long?
Compiling a C++ file takes a very long time when compared to C# and Java. It takes significantly longer to compile a C++ file than it would to run a normal size Python script. I'm currently using VC++ but it's the same with any compiler. Why is this?
...
Best way to pretty print a hash
...ed: I always use pry as my Rails console, and I've been looking for a long time how to tap into its pretty-printer without using another gem. Upvoted because this solution finally put an end to my long search. :-)
– wiz
Jul 25 '18 at 7:49
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Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...created a recursive function - and thus it ran out of memory at any random time during code execution. This had the upside of me now having the world's most memory efficient code, created in the hunt for a memory leak.
– Kris Selbekk
Oct 15 '13 at 18:13
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