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How to get 0-padded binary representation of an integer in java?
...ormatter, I would advise you to either use String.replace to replace space character with zeros, as in:
String.format("%16s", Integer.toBinaryString(1)).replace(" ", "0")
Or implement your own logic to convert integers to binary representation with added left padding somewhere along the lines giv...
How and why does 'a'['toUpperCase']() in JavaScript work?
... same as anyObject.anyPropertyName when anyPropertyName hasn't problematic characters.
See Working with Objects, from the MDN.
The toUpperCase method is attached to the type String. When you call a function on a primitive value, here 'a', it is automatically promoted to an object, here a String :
...
What is the difference between exit() and abort()?
...void)
{
cout<<"exit function 2"<<endl;
}
int main(int argc, char**argv)
{
atexit (myProgramIsTerminating1);
atexit (myProgramIsTerminating2);
//abort();
return 0;
}
Comments:
If abort is uncommented: nothing is printed and the destructor of someobject will not be called. ...
Modifying location.hash without page scrolling
... load
if(document.location.hash){
$("#buttons li a").removeClass('selected');
s=$(document.location.hash.replace("btn_","")).addClass('selected').attr("href").replace("javascript:","");
eval(s);
}
//Click a button to change the hash
$("#buttons li a").click(function()...
SQLAlchemy IN clause
...3,456))).all()
edit: Without the ORM, it would be
session.execute(
select(
[MyUserTable.c.id, MyUserTable.c.name],
MyUserTable.c.id.in_((123, 456))
)
).fetchall()
select() takes two parameters, the first one is a list of fields to retrieve, the second one is the where ...
Entity Framework DateTime and UTC
...ngth);
}
/// <inheritdoc />
public override char GetChar(int ordinal)
{
return source.GetChar(ordinal);
}
/// <inheritdoc />
public override long GetChars(int ordinal, long dataOffset, char[] buffer, int bufferOffset, ...
How to get distinct values for non-key column fields in Laravel?
...lder you can do it this way:
$users = DB::table('users')
->select('id','name', 'email')
->groupBy('name')
->get();
share
|
improve this answer
...
jQuery count child elements
...
You can use .length with just a descendant selector, like this:
var count = $("#selected li").length;
If you have to use .children(), then it's like this:
var count = $("#selected ul").children().length;
You can test both versions here.
...
Generate GUID in MySQL for existing Data?
...e BEFORE UPDATE on YourTable
FOR EACH ROW
BEGIN
SET new.guid_column := (SELECT UUID());
END
//
Then execute
UPDATE YourTable set guid_column = (SELECT UUID());
And DROP TRIGGER beforeYourTableUpdate;
UPDATE
Another solution that doesn't use triggers, but requires primary key or unique inde...
How to run a program without an operating system?
...her such weird keys after power-on until you get a boot menu where you can select to boot from the USB.
It is often possible to configure the search order in those menus.
For example, on my T430 I see the following.
After turning on, this is when I have to press Enter to enter the boot menu:
The...