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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...s whether it is a file or directory), you will get the return value thrown by the ls command, which should be 0 (default "success" return value). If it doesn't exist, you should get a number other then 0. The exact number depends on the program.
For many programs you can find the numbers and their ...
How do I set the rounded corner radius of a color drawable using xml?
...ember to add padding for the start and end so the text doesn't get crowded by the rounded edge
– RowanPD
Jun 4 '17 at 15:49
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What does the filter parameter to createScaledBitmap do?
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A quick dig through the SKIA source-code indicates that (at least by default) the FILTER flag causes it to do a straightforward bilinear interpolation. Check Wikipedia or your favorite graphics reference to see what the expected consequences are. Traditionally, you want to do bilinear or ...
Check if class already assigned before adding
...the accepted answer with a little added detail.
You're trying to optimise by avoiding an unnecessary check, in this regard here are factors you must be aware of:
it's not possible to have duplicate class names in the class attribute by means of manipulating a DOM element via JavaScript. If you ha...
How to paste yanked text into the Vim command line
...hen @+ will play the clipboard contents as a macro, and thus go to the 8th byte of your file. Actually this will work with almost every register. If your last inserted string was dd in Insert mode, then @. will (because the . register contains the last inserted string) delete a line. (Vim documentat...
How to prevent Browser cache for php site
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Except for "max-age=0", those are the headers sent by PHP without specifying the above in my installation.. It seems PHP tries to prevent browser caching by default...
– fast-reflexes
May 19 '13 at 10:03
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How to convert a factor to integer\numeric without loss of information?
...ticular, as.numeric applied to
a factor is meaningless, and may
happen by implicit coercion. To
transform a factor f to
approximately its original numeric
values, as.numeric(levels(f))[f] is
recommended and slightly more
efficient than
as.numeric(as.character(f)).
The FAQ on R has...
Convert String to SecureString
...il garbage collection). However, you can add characters to a SecureString by appending them.
var s = new SecureString();
s.AppendChar('d');
s.AppendChar('u');
s.AppendChar('m');
s.AppendChar('b');
s.AppendChar('p');
s.AppendChar('a');
s.AppendChar('s');
s.AppendChar('s');
s.AppendChar('w');
s.Appe...
Python serialization - Why pickle?
...tle. Then that information stored in the class might be altered at runtime by the user.
You could have another group of tables in the database and write another function to go through everything stored and write it to the new database tables. Then you would need to write another function to be able...
Recover unsaved SQL query scripts
...ry
CROSS APPLY sys.dm_exec_sql_text(execquery.sql_handle) AS execsql
ORDER BY execquery.last_execution_time DESC
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