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How to update SQLAlchemy row entry?
...'m not that familiar with SERIALIZABLE transaction isolation-level, but to my understanding it would allow performing the addition in Python using the in-place addition. If there is a race, one of the transactions will then succeed and the others will fail and must retry (with the new state of the D...
Create a nonclustered non-unique index within the CREATE TABLE statement with SQL Server
...t SQL Server 2014 introduced the inline index create option:
CREATE TABLE MyTable(
a int NOT NULL
,b smallint NOT NULL
,c smallint NOT NULL
,d smallint NOT NULL
,e smallint NOT NULL
-- This creates a primary key
,CONSTRAINT PK_MyTable PRIMARY KEY CLUSTERED (a)
-- T...
Git stash uncached: how to put away all unstaged changes?
...81302/292408) is the correct one, I recommend checking it out.
I tested my answer again today (31/1/2020) against git version 2.24.0, and I still believe that it's correct, I added a small note above about the untracked files.
If you think it's not working please also mention your git version.
O...
Accessing an SQLite Database in Swift
I'm looking for a way to access an SQLite database in my app with Swift code.
12 Answers
...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
... contains special characters.
I'd love to hear the detailed explanation. My testing confirms this, and I'm now quoting my variables for all string tests, to avoid having -z and -n return the same result.
$ unset a
$ if [ -z $a ]; then echo unset; else echo set; fi
unset
$ if [ -n $a ]; then echo ...
ctypes - Beginner
...e's a simple Hello world example:
testlib.c
#include <stdio.h>
void myprint(void);
void myprint()
{
printf("hello world\n");
}
Now compile it as a shared library (mac fix found here):
$ gcc -shared -Wl,-soname,testlib -o testlib.so -fPIC testlib.c
# or... for Mac OS X
$ gcc -shared -W...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
My program operates like this:
9 Answers
9
...
What goes into the “Controller” in “MVC”?
...ept to be a particularly useful one. I use strict model/view separation in my code but there's no clearly-defined controller. It seems to be an unnecessary abstraction.
Personally, full-blown MVC seems like the factory design pattern in that it easily leads to confusing and over-complicated design....
Preferred way of loading resources in Java
...ce from the same jar as the this clas is from and not from another jar. By my reckoning, it's the class loader that loads the resource and surely won't be confined from loading from only the one jar?
– Michael Wiles
Oct 5 '10 at 12:44
...
Why not abstract fields?
... could declare a method like the following in Java:
public abstract class MyClass {
public static abstract MyClass createInstance();
// more stuff...
}
Basically, I would like to insist that concrete implementations of my parent class provide a static factory method with a specific sig...