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What is a dependency property?
... it to be in Row #2 on the parent Grid (due to the fact that rows are zero-based) but the Row DependencyProperty belongs to the Grid object.
– Jonathan Perry
Jul 17 '13 at 12:24
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SQLite UPSERT / UPDATE OR INSERT
I need to perform UPSERT / INSERT OR UPDATE against a SQLite Database.
7 Answers
7
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What data type to use for hashed password field and what length?
...word hashing works (will be implementing it later), but need to create database schema now.
10 Answers
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How do I move the turtle in LOGO? [closed]
...monic fd. When working with a robot (real) turtle as opposed to a graphics based (virtual) one, you might find that the turning commands left and right [lt & rt] move the turtle a little, accidentally.
Most implementations also allow the command backwards [bk].
When the turtle moves, it may dr...
Virtual functions and performance - C++
...o be defined via vtable if it's marked as virtual or if it's overriding a base class that has it as virtual. You'll often see classes that have a group of virtual functions for public interface, and then a lot of inline accessors and so on. (Technically, this is implementation-specific and a compi...
What does 'wb' mean in this code, using Python?
... when you specify text mode with wt), however, Python will encode the text based on the default text encoding. Additionally, Python will convert line endings (\n) to whatever the platform-specific line ending is, which would corrupt a binary file like an exe or png file.
Text mode should therefore ...
Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
...usted programs both interactively and in automatic mode. It has a ptrace()-based backend which allows its use on a Linux system without special privileges, as well as a far faster and more poweful backend which requires patching the kernel.
It is also possible to create a sandbox on Unix-like syste...
How to get a time zone from a location using latitude and longitude coordinates?
...nt libraries for just about everything
Self-hosted web services
geo2tz - based on Timezone lookup, available via Docker image
Other Ideas
Find the nearest city with an R-Tree
Find the nearest city with MySQL
Please update this list if you know of any others
Also, note that the nearest-city appr...
What is difference between sjlj vs dwarf vs seh?
...stack unwinding tables have to be
included in th executables.
A method based on setjmp/longjmp (SJLJ). SJLJ-based EH is much slower than DW2 EH (penalising even normal execution when no
exceptions are thrown), but can work across code that has not been
compiled with GCC or that does not have...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...k, with the C# implementation of Android well and truly trouncing the Java-based Dalvik.
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