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What is polymorphism, what is it for, and how is it used?
...ism and inheritance are all closely-related concepts and they're vital to know. There have been many "silver bullets" during my long career which basically just fizzled out but the OO paradigm has turned out to be a good one. Learn it, understand it, love it - you'll be glad you did :-)
(a) I ori...
Practical non-image based CAPTCHA approaches?
... twist on this that I use. Make the hidden value an encrypted time set to now. Upon post back, verify that between 10 seconds and 10 minutes has elapsed. This foils tricksters who would try to plug in some always-valid value.
– Tim Scott
Feb 7 '09 at 22:41
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What does GitHub for Windows' “sync” do?
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Can confirm hitting Sync just now did a git pull rather than a git pull --rebase, thus creating an additional Merge branch 'master' of ... commit.
– Leo
Sep 9 '16 at 14:33
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Mac OSX Lion DNS lookup order [closed]
...I discovered this when I noticed some ads that I had never seen before on Snow Leopard because I had redirected the ad domains to 127.0.0.1. I fired up wireshark and noticed AAAA (IPv6 DNS records) queries following the IPv4 A queries (IPv4). The ad servers indeed have IPv6 addesses and were able to...
support FragmentPagerAdapter holds reference to old fragments
...r app is killed, this information is restored when you relaunch your app.
Now consider that you have viewed a few pages, Fragments A, B and C. You know that these have been added to the fragment manager. Because you are using FragmentPagerAdapter and not FragmentStatePagerAdapter, these fragments w...
Authenticate Jenkins CI for Github private repository
...s of the URLs being used, the names and location of the key files, etc.
Now for the technical part: How to use your SSH key with Jenkins?
If you have, say, a jenkins unix user, you can store your deploy key in ~/.ssh/id_rsa. When Jenkins tries to clone the repo via ssh, it will try to use that k...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...IEdgeInsetsMake(-15.0, 0.0, 0.0, -button.titleLabel.bounds.size.width)];
Now the image and the text will be centered (in this example, the image appears above the text).
Cheers.
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How do I fix PyDev “Undefined variable from import” errors?
...art Eclipse, do Project>Pydev>Remove error markers, and numpy should now appear in the Forced builtins.
– smci
Nov 1 '17 at 16:43
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Recreating a Dictionary from an IEnumerable
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@DanVerdolino I know that. You'd think that because it's like one of the most common things you might want to do with an IEnumerable of KVPs.
– Casey
Jul 1 '14 at 15:42
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What is the precise meaning of “ours” and “theirs” in git?
...asic of a question, but I have searched for answers and I am more confused now than before.
7 Answers
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