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Convert Datetime column from UTC to local time in select statement
... see the name of a time zone here so this is incorrect. It's a really bad idea to assume you can convert to local time by doing arithmetic
– JonnyRaa
Sep 3 '14 at 16:33
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How to completely remove node.js from Windows
...e current version, it is still showing me the same version installed. Any ideas? Thanks.
– Deepak Pathak
May 16 '17 at 6:45
1
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UTF-8 all the way through
..., when the function is actually designed to work on characters, PHP has no idea that your text has multi-byte characters that are found with Unicode.
A good library to check into is phputf8. This rewrites all of the "bad" functions so you can safely work on UTF8 strings. There are extensions like t...
Moving from CVS to Git: $Id$ equivalent?
...ollection of files making up a commit, not to one file in particular (That idea is a remnant from the RCS days, or perhaps SCCS is to blame here... As CVS is just a glorified frontend to RCS, and SVN tries to be a CVS-workalike, it stuck.).
– vonbrand
Jan 25 '1...
TDD vs. Unit testing [closed]
... the techniques described in Fearless Change: Patterns for Introducing New Ideas, by Mary Lynn Manns and Linda Rising.
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What are enums and why are they useful?
...h, but it's so tricky that it even more clearly shows why enum is a better idea.)
Thread safety
Thread safety is a potential problem only when singletons are created lazily with no locking.
public class SingletonClass {
private static SingletonClass INSTANCE;
private SingletonClass() {}
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In C#, what happens when you call an extension method on a null object?
...nt to be null and nothing else special will happen. This gives raise to an idea to use extension methods to write guard clauses.
You may read this article for examples: How to Reduce Cyclomatic Complexity: Guard Clause Short version is this:
public static class StringExtensions
{
public static...
Fastest way to tell if two files have the same contents in Unix/Linux?
...ou're worried about someone intentionally trying to create a collision the idea of this method producing a false positive is not really a serious concern. cmp is still more efficient though, since it doesn't have to read the entire file in the case where the files don't match.
–...
Can a foreign key be NULL and/or duplicate?
...ow nulls on the field that has the FK. The null value is separate from the idea of it being an FK.
Whether it is unique or not unique relates to whether the table has a one-one or a one-many relationship to the parent table. Now if you have a one-one relationship, it is possible that you could ha...
Creating a blurring overlay view
... Synchronous UIView Snapshot Convolving. Great code and a great read. Some ideas from this post:
Use a serial queue to throttle updates from CADisplayLink.
Reuse bitmap contexts unless bounds change.
Draw smaller images using -[CALayer renderInContext:] with a 0.5f scale factor.
Other stuff
A...