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What are the best practices for using a GUID as a primary key, specifically regarding performance?
... every row in your table. This can be anything, really - an INT, a GUID, a string - pick what makes most sense for your scenario.
the clustering key (the column or columns that define the "clustered index" on the table) - this is a physical storage-related thing, and here, a small, stable, ever-incr...
What's the difference between “Request Payload” vs “Form Data” as seen in Chrome dev tools Network t
...is no such thing as a "json object". the json data sent is sent as a plain string because json is essentially a string. you can of course convert it into a standard "object" with json_encode but that doesn't make it a "json object" either.
– Volkan Ulukut
Dec 7...
Java: Check if enum contains a given string?
...
This should do it:
public static boolean contains(String test) {
for (Choice c : Choice.values()) {
if (c.name().equals(test)) {
return true;
}
}
return false;
}
This way means you do not have to worry about adding additional enum ...
Explain the concept of a stack frame in a nutshell
... instructions to save, set up and restore frame pointers; it also makes an extra register available in many functions)
Intel C++ Compiler have the following:
-fomit-frame-pointer (Determines whether EBP is used as a general-purpose register in optimizations)
which has the following alias:
/O...
Is it good practice to NULL a pointer after deleting it?
...e aren't many deletes in your code to begin with, so the argument that the extra assignment causes clutter doesn't persuade me.
It's often convenient, when debugging, to see the null value rather than a stale pointer.
If this still bothers you, use a smart pointer or a reference instead.
I also se...
Copying data from one SQLite database to another
...ctoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *maindbPath = [documentsDir stringByAppendingPathComponent:@"User.sqlite"];;
NSString *newdbPath = [documentsDir stringByAppendingPathComponent:@"...
How to get names of enum entries?
...
enum Enum {
A
}
let nameOfA = Enum[Enum.A]; // "A"
Keep in mind that string enum members do not get a reverse mapping generated at all.
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No connection string named 'MyEntities' could be found in the application config file
...
Try copying the connections string to the .config file in the MVC project.
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How can a LEFT OUTER JOIN return more records than exist in the left table?
...ually want you can use aggregate functions (if for example you just want a string from the right part you could generate a column that is a comma delimited string of the right side results for that left row.
If you are only looking at 1 or 2 columns from the outer join you might consider using a sc...
Git ignore file for Xcode projects
... (or none at all)
# This file is for SOURCE projects, where there are many extra
# files that we want to exclude
#
#########################
#####
# OS X temporary files that should never be committed
#
# c.f. http://www.westwind.com/reference/os-x/invisibles.html
.DS_Store
# c.f. http://www.west...