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Unique Constraint in Entity Framework Code First
...h unique constraints... you may want to create indexes, check constraints, and possibly triggers and other constructs too. Here's a simple pattern you can use with your code-first setup, though admittedly it's not database agnostic:
public class MyRepository : DbContext {
public DbSet<Whate...
How to send an object from one Android Activity to another using Intents?
...effort to use than using Java's native serialization, but it's way faster (and I mean way, WAY faster).
From the docs, a simple example for how to implement is:
// simple class that just has one member property as an example
public class MyParcelable implements Parcelable {
private int mData;
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JavaScript variables declare outside or inside loop?
...rmance, in JavaScript or ActionScript.
var is a directive for the parser, and not a command executed at run-time. If a particular identifier has been declared var once or more anywhere in a function body(*), then all use of that identifier in the block will be referring to the local variable. It ma...
Where to place AutoMapper.CreateMaps?
...nterface of words" - can't enforce it, but you expect it, so you can code (and refactor) if necessary.
EDIT:
Just thought I'd mention that I now use AutoMapper profiles, so the above example becomes:
public static class AutoMapperWebConfiguration
{
public static void Configure()
{
Map...
How many files can I put in a directory?
...p in a single directory? If so, how many files in a directory is too many, and what are the impacts of having too many files? (This is on a Linux server.)
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How can I delete a file from a Git repository?
...y. After that, I committed it, added a couple of directories called dir1 and dir2 , and committed them to the Git repository.
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How to make a variadic macro (variable number of arguments)
...eceding comma in case the variable-argument list is empty, eg. FOO("a") expands to printf("a"). This is an extension of gcc (and vc++, maybe), C99 requires at least one argument to be present in place of the ellipsis.
– jpalecek
Mar 26 '09 at 20:20
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Android buildscript repositories: jcenter VS mavencentral
The last time I used Android Studio, it generated .gradle files with mavencentral() buildscript repositories whereas now there's jcenter() .
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Rails migrations: self.up and self.down versus change
Looks like the new rails version has "change" versus self.up and self.down methods.
3 Answers
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Database sharding vs partitioning
...two words that keep on showing up with regards to databases are sharding and partitioning . I looked up descriptions but still ended up confused.
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