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What is the use for Task.FromResult in C#
...hanism. But if you wrote a caching mechanism for ... say .... downloading files, Task<File> GetFileAync( ), you could instantly return a file that is already in cache by using Task.FromResult(cachedFile), and the await would run synchronously, saving time by not having the thread switch.
...
Why is char[] preferred over String for passwords?
...seen, even by
administrators. For instance, it should not be sent to log files and
its presence should not be detectable through searches. Some transient
data may be kept in mutable data structures, such as char arrays, and
cleared immediately after use. Clearing data structures has reduced
...
Change cursor to hand when mouse goes over a row in table
...u want the cursor to change on.
In your case, you would use (in your .css file):
.sortable {
cursor: pointer;
}
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Dispelling the UIImage imageNamed: FUD
...gest thing that +imageNamed: does is decode the image data from the source file, which almost always significantly inflates the data size (for example, a screen sized PNG file might consume a few dozen KBs when compressed, but consumes over half a MB decompressed - width * height * 4). By contrast +...
Calling shell functions with xargs
...'' sh: parallel_bash_environment: line 79: syntax error: unexpected end of file sh: error importing function definition for parallel_bash_environment' /usr/local/bin/bash: parallel_bash_environment: line 67: unexpected EOF while looking for matching '' /usr/local/bin/bash: parallel_bash_environment:...
Getting the last element of a list
...handled:
>>> empty_list[-1]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: list index out of range
But again, slicing for this purpose should only be done if you need:
a new list created
and the new list to be empty if the prior list wa...
REST API - why use PUT DELETE POST GET?
...y to specify the type of data explicitly would be via the already existing file extension such as .js, .json, .html, or .xml. A missing file extension would default to whatever format is default (such as JSON); a file extension that's not supported could return a 501 Not Implemented status code.
An...
How to get a list of MySQL views?
...data directory. MySQL maps the database structure pretty directly onto the file system, databases are mapped to directories and tables are files in those directories.
The name of the non-working database looks suspiciously like someone has copied the mysql database directory to a backup at some poi...
Android studio logcat nothing to show
...tudio 0.8.14. Reinstalling it did nothing, going to try the SDK and config files now.
– G_V
Nov 19 '14 at 9:53
2
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Kill detached screen session [closed]
...-0.devxxx
ls
The uscreens directory will not have the 26727.pts-0.devxxx file in it anymore. Now to make sure just type this:
screen -ls
and you should get:
No Sockets found in /tmp/uscreens/S-xxx.
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