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Store boolean value in SQLite
...alse and true. You could declare the column type like this:
CREATE TABLE foo(mycolumn BOOLEAN NOT NULL CHECK (mycolumn IN (0,1)));
Omit the NOT NULL if you want to allow NULL in addition to 0 and 1.
The use of the type name BOOLEAN here is for readability, to SQLite it's just a type with NUMERI...
How to use CMAKE_INSTALL_PREFIX
...ists.txt
cmake_minimum_required (VERSION 2.8)
set (CMAKE_INSTALL_PREFIX /foo/bar/bubba)
message("CIP = ${CMAKE_INSTALL_PREFIX} (should be /foo/bar/bubba")
project (BarkBark)
message("CIP = ${CMAKE_INSTALL_PREFIX} (should be /foo/bar/bubba")
set (CMAKE_INSTALL_PREFIX /foo/bar/bubba)
message("CIP = ...
How to replace a string in multiple files in linux command line
...
cd /path/to/your/folder
sed -i 's/foo/bar/g' *
Occurrences of "foo" will be replaced with "bar".
On BSD systems like macOS, you need to provide a backup extension like -i '.bak' or else "risk corruption or partial content" per the manpage.
cd /path/to/you...
Express-js wildcard routing to cover everything under and including a path
I'm trying to have one route cover everything under /foo including /foo itself. I've tried using /foo* which work for everything except it doesn't match /foo . Observe:
...
How to get next/previous record in MySQL?
...
next:
select * from foo where id = (select min(id) from foo where id > 4)
previous:
select * from foo where id = (select max(id) from foo where id < 4)
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Execution of Python code with -m option or not
...t when you try to run a package. There is a big difference between:
python foo/bar/baz.py
and
python -m foo.bar.baz
as in the latter case, foo.bar is imported and relative imports will work correctly with foo.bar as the starting point.
Demo:
$ mkdir -p test/foo/bar
$ touch test/foo/__init__.py
$ t...
How to write WinForms code that auto-scales to system font and dpi settings?
...ompatibility -->
<supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
</application>
</compatibility>
Next, add an app.config and declare the app Per Monitor Aware. This is NOW done in app.config and NOT in the manifest like before!
<System.Windows.Forms...
What is the purpose of the “final” keyword in C++11 for functions?
...to be able to mark a non-virtual method as 'final'. Given
struct A { void foo(); };
struct B : public A { void foo(); };
A * a = new B;
a -> foo(); // this will call A :: foo anyway, regardless of whether there is a B::foo
a->foo() will always call A::foo.
But, if A::foo was virtual, then ...
Shorthand way for assigning a single field in a record, while copying the rest of the fields?
...e's a nice way of updating record fields. In GHCi you can do --
> data Foo = Foo { a :: Int, b :: Int, c :: String } -- define a Foo
> let foo = Foo { a = 1, b = 2, c = "Hello" } -- create a Foo
> let updateFoo x = x { c = "Goodbye" } -- function to update Foos
> ...
How do I check that multiple keys are in a dict in a single pass?
...
Well, you could do this:
>>> if all (k in foo for k in ("foo","bar")):
... print "They're there!"
...
They're there!
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