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Quickly find whether a value is present in a C array?
...oned in my comment: Loop unrolling, cache prefetch and making use of the multiple load (ldm) instruction. The instruction cycle count comes out to about 3 clocks per array element, but this doesn't take into account memory delays.
Theory of operation: ARM's CPU design executes most instructions in ...
How to get git diff with full context?
...
< is not necessary. git diff -U$(wc -l MYFILE) MYFILE
– balki
Nov 18 '16 at 22:12
2
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What does LINQ return when the results are empty
... have a question about LINQ query. Normally a query returns a IEnumerable<T> type. If the return is empty, not sure if it is null or not. I am not sure if the following ToList() will throw an exception or just a empty List<string> if nothing found in IEnumerable result?
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Ninject vs Unity for DI [closed]
...swered Jun 28 '09 at 12:18
MendeltMendelt
33.7k66 gold badges7070 silver badges9292 bronze badges
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What is the best (and safest) way to merge a Git branch into master?
...o-date:
git checkout master
git pull --rebase origin master
git checkout <branch_name>
git pull --rebase origin <branch_name>
Merge Branch on top of Master:
git checkout <branch_name>
git rebase master
Optional: If you run into Conflicts during the Rebase:
First, resolve con...
Could not load file or assembly … An attempt was made to load a program with an incorrect format (Sy
...e worst that happened to me with this error was when VS decided to append <PlatformTarget>x86</PlatformTarget> in one of the dependent projects for no reason at all. If I haven't looked into SVN I would have never figured out why our MVC app fails to launch.
– jahu
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Android search with Fragments
... possible.
When creating a searchable interface, you must specify a default "searchable activity" in your Android manifest. As I'm sure you know, a Fragment cannot exist without a parent Activity and thus, this separation is not possible.
If you already figured out #1 already, I assume you asked t...
Get the current fragment object
...t tried this. Or you can use setContentView() to use a layout file with a <fragment> tag. Either of those happen synchronously, and so the fragment will exist within the onCreate() call itself where you used executePendingTransaction() or setContentView(). Otherwise, an ordinary FragmentTransa...
mongoDB/mongoose: unique if not null
... you can get the desired behavior of ensuring unique values but allowing multiple docs without the field by setting the sparse option to true when defining the index. As in:
email : {type: String, trim: true, index: true, unique: true, sparse: true}
Or in the shell:
db.users.ensureIndex({email:...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...gh the whole string looking for the prefix". That would give the wrong result (e.g. string("tititito").rfind("titi") returns 2 so when compared against == 0 would return false) and it would be inefficient (looking through the whole string instead of just the start). But it does not do that because i...