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Simple and fast method to compare images for similarity
...h the previous two.
Detectors of salient points/areas - such as MSER (Maximally Stable Extremal Regions), SURF or SIFT. These are very robust algorithms and they might be too complicated for your simple task. Good thing is that you do not have to have an exact area with only one icon, these detector...
Conditionally start at different places in storyboard from AppDelegate
...ful, and show the login view controller if the authentication failed.
Basically, I want to do this in my AppDelegate:
10 An...
How to delete object from array inside foreach loop?
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@Oliver: usually it will generate unexpected behavior, but you can do it safely with foreach on php. Give a read here for a test: php.net/manual/en/control-structures.foreach.php#88578
– pangon
Jan ...
How do you create a random string that's suitable for a session ID in PostgreSQL?
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random() gets called length times (like in many of the other solutions). Is there a more efficient way to choose from 62 characters each time? How does this perform compared to md5()?
– ma11hew28
Feb 1...
git diff file against its last change
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This does exist, but it's actually a feature of git log:
git log -p [--follow] [-1] <path>
Note that -p can also be used to show the inline diff from a single commit:
git log -p -1 <commit>
Options used:
-p (also -u or --patch) is hidd...
Why use armeabi-v7a code over armeabi code?
...point operations, which makes a huge difference. armeabi will work fine on all devices, but will be a lot slower, and won't take advantage of newer devices' CPU capabilities. Do take some benchmarks for your particular application, but removing the armeabi-v7a binaries is generally not a good idea. ...
Await on a completed task same as task.Result?
... different; await does not wrap the exception in an AggregateException. Ideally, asynchronous code should never have to deal with AggregateException at all, unless it specifically wants to.
The second reason is a little more subtle. As I describe on my blog (and in the book), Result/Wait can cause ...
Strangest language feature
What is, in your opinion, the most surprising, weird, strange or really "WTF" language feature you have encountered?
320 An...
git add remote branch
... information on merging the remote and local branches.
Creating a remote called "github":
git remote add github git://github.com/jdoe/coolapp.git
git fetch github
List all remote branches:
git branch -r
github/gh-pages
github/master
github/next
github/pu
Create a new local branch (tes...
How do I resolve “Cannot find module” error using Node.js?
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Using npm install installs the module into the current directory only (in a subdirectory called node_modules). Is app.js located under home/dave/src/server/? If not and you want to use the module from any directory, you need to install i...