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Best practices for in-app database migration for Sqlite
...h this variable, you are free to use it however you please). It starts at 0, and you can get/set this variable with the following sqlite statements:
> PRAGMA user_version;
> PRAGMA user_version = 1;
When the app starts, I check the current user-version, apply any changes that are needed ...
Why would one use nested classes in C++?
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230
Nested classes are cool for hiding implementation details.
List:
class List
{
public:
...
How can I position my div at the bottom of its container?
...Assign position:relative to #container, and then position:absolute; bottom:0; to #copyright.
#container {
position: relative;
}
#copyright {
position: absolute;
bottom: 0;
}
<div id="container">
<!-- Other elements here -->
<div id="copyright">
...
Windows batch: echo without new line
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Nicholas DiPiazza
7,50188 gold badges5353 silver badges111111 bronze badges
answered Aug 18 '11 at 10:05
arneparnep
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Why are there two kinds of functions in Elixir?
...
A function can have multiple clauses too:
x = 1
fun = fn
y when y < 0 -> x - y
y -> x + y
end
fun.(2) #=> 3
fun.(-2) #=> 3
Now, let's try something different. Let's try to define different clauses expecting a different number of arguments:
fn
x, y -> x + y
x -> x
en...
Standard alternative to GCC's ##__VA_ARGS__ trick?
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10 Answers
10
Active
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Actionbar notification count icon (badge) like Google has
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+100
I am not sure if this is the best solution or not, but it is what I need.
Please tell me if you know what is need to be changed for ...
SQLite UPSERT / UPDATE OR INSERT
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This is a late answer. Starting from SQLIte 3.24.0, released on June 4, 2018, there is finally a support for UPSERT clause following PostgreSQL syntax.
INSERT INTO players (user_name, age)
VALUES('steven', 32)
ON CONFLICT(user_name)
DO UPDATE SET age=excluded.age;
...
How do I generate random number for each row in a TSQL Select?
...ation.
To summarize, the following code generates a random number between 0 and 13 inclusive with a uniform distribution:
ABS(CHECKSUM(NewId())) % 14
To change your range, just change the number at the end of the expression. Be extra careful if you need a range that includes both positive and ne...
Modify request parameter with servlet filter
... |
edited Jan 27 '12 at 10:06
penfold
1,20311 gold badge1313 silver badges2020 bronze badges
answered S...