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Why is C so fast, and why aren't other languages as fast or faster? [closed]
...in C tend to be focused on adding safety, adding complexity, and providing error handling. Those are often good things, but they have a cost, and its names are speed and size.
Personally, I have written in literally dozens of languages spanning most of the available spectrum, and I personally have...
Is null an Object?
...ype null
According to OpenJDKs 12.0.1 javac it is:
true.toString(); // error: boolean cannot be dereferenced
null.toString(); // error: <null> cannot be dereferenced
Where the angle brackets imply that null is of an other than a primitive type. And according to JLS 4.1:
There are tw...
How to redirect output of an entire shell script within the script itself?
...nal, standard input is also writable and both standard output and standard error are readable by virtue (or is it 'vice'?) of a historical quirk: the terminal is opened for reading and writing and the same open file description is used for all three standard I/O file descriptors.
...
How should one use std::optional?
...archy, instead of passing around some "phantom" value "assumed" to have a "error" meaning.
– Luis Machuca
Oct 3 '13 at 16:35
1
...
Eclipse Workspaces: What for and why?
... group of related maven projects into a workspace lets you develop and see errors in real time. If not a workspace what else would you suggest? An RCP application can be a different beast depending on what its used for but in the true IDE sense I don't know what would be a better solution than a wor...
Disable cross domain web security in Firefox
...h: {
// Enable this if you encounter unexpected SSL certificate errors in Firefox
acceptInsecureCerts: true,
'moz:firefoxOptions': {
args: [
// '-headless',
// '-verbose'
],
}
}
}
...
When do I need to use a semicolon vs a slash in Oracle SQL?
...gt; drop table foo;
Table dropped.
SQL> /
drop table foo
*
ERROR at line 1:
ORA-00942: table or view does not exist
In this case one actually notices the error.
But assuming there is a SQL script like this:
drop table foo;
/
And this is run from within SQL*Plus then this wil...
UIRefreshControl on UICollectionView only works if the collection fills the height of the container
...
Const gives an error of undefined variable. if someone encounters the same situation just replace it with UIColor.whiteColor() or whatever color you like.
– Faisal
May 13 '16 at 5:04
...
How can I read a text file without locking it?
... Seems to work when reading data. When writing the locked file error comes up.
– webzy
Feb 8 '16 at 9:00
...
Getting Chrome to accept self-signed localhost certificate
... self-signed certs worked fine in the past but suddenly started generating errors in Chrome 58, this is why.
So whatever method you are using to generate your self-signed cert (or cert signed by a self-signed CA), ensure that the server's cert contains a subjectAltName with the proper DNS and/or IP...