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Most efficient way to concatenate strings?
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The StringBuilder.Append() method is much better than using the + operator. But I've found that, when executing 1000 concatenations or less, String.Join() is even more efficient than StringBuilder.
StringBuilder sb = new StringBuilder();
sb....
add created_at and updated_at fields to mongoose schemas
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UPDATE: (5 years later)
Note: If you decide to use Kappa Architecture (Event Sourcing + CQRS), then you do not need updated date at all. Since your data is an immutable, append-only event log, you only ever need event created date. Similar to the Lambda Architecture, described...
How do I use an INSERT statement's OUTPUT clause to get the identity value?
...e this also from e.g. C#, when you need to get the ID back to your calling app - just execute the SQL query with .ExecuteScalar() (instead of .ExecuteNonQuery()) to read the resulting ID back.
Or if you need to capture the newly inserted ID inside T-SQL (e.g. for later further processing), you need...
Django admin: How to display a field that is marked as editable=False' in the model?
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I just created a sample application to reproduce your error (django 2.0.8, python 3.5). This still works fine. Maybe something else is wrong in your app @nerdoc?
– tback
Sep 5 '18 at 13:29
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When should I use jQuery's document.ready function?
...updated question. I'm loading jQuery at the bottom of my HTML page with my app-specific code right after that.
– tim peterson
Oct 25 '12 at 6:14
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How to use executables from a package installed locally in node_modules?
How do I use a local version of a module in node.js . For example, in my app, I installed coffee-script:
22 Answers
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How to call C from Swift?
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Yes, you can of course interact with Apples C libraries. Here is explained how.
Basically, the C types, C pointers, etc are translated into Swift objects, for example a C int in Swift is a CInt.
I've build a tiny example, for another question, which can be use...
Parsing Visual Studio Solution files
...parse Visual Studio solution (SLN) files in .NET?
I would like to write an app that merges multiple solutions into one while saving the relative build order.
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strdup() - what does it do in C?
...n is guaranteed to run only on Solaris or Linux (by the very nature of the app).
– Patrick Schlüter
Dec 30 '11 at 13:01
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How to compile and run C/C++ in a Unix console/Mac terminal?
...ntu, but it works in OS X as well. Type the following command in Terminal.app.
$ g++ -o lab21 iterative.cpp
-o is the letter O not zero
lab21 will be your executable file
iterative.cpp is your c++ file
After you run that command type the following in terminal to run your program:
$ ./lab21
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