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IOCTL Linux device driver [closed]
...where you set up a file under /sys/ and read/write that to get information from and to the driver. An example of how to set this up:
static ssize_t mydrvr_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", DRIVER_RELEASE);
}
static ...
Redirect stderr and stdout in Bash
... part of POSIX, but the bash man page makes no mention of it being removed from bash in the near future. The man page does specify a preference for '&>' over '>&', which is otherwise equivalent.
– chepner
Jul 16 '12 at 20:45
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How to generate and validate a software license key?
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Caveat: you can't prevent users from pirating, but only make it easier for honest users to do the right thing.
Assuming you don't want to do a special build for each user, then:
Generate yourself a secret key for the product
Take the user's name
Concaten...
What JSON library to use in Scala? [closed]
... to Scala version 2.9.x (removed in newer versions)
spray-json - Extracted from the Spray project
Jerkson ± - Warning a nice library (built on top of Java Jackson) but now abandonware. If you are going to use this, probably follow the Scalding project's example and use the backchat.io fork
sjson - ...
Effective method to hide email from spam bots
On my homepage, I'm using this method to hide my email from spam bots:
34 Answers
34
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How do I remove repeated elements from ArrayList?
I have an ArrayList<String> , and I want to remove repeated strings from it. How can I do this?
38 Answers
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Save ArrayList to SharedPreferences
...commit();
You can also serialize your ArrayList and then save/read it to/from SharedPreferences. Below is the solution:
EDIT:
Ok, below is the solution to save ArrayList as a serialized object to SharedPreferences and then read it from SharedPreferences.
Because API supports only storing and retri...
Squash my last X commits together using Git
...<after-this-commit> is either the SHA1 hash or the relative location from the HEAD of the current branch from which commits are analyzed for the rebase command. For example, if the user wishes to view 5 commits from the current HEAD in the past the command is git rebase -i HEAD~5.
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Error - trustAnchors parameter must be non-empty
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btw this happens e.g. when switching from OracleJDK8 to OpenJDK8 since OpenJDK comes with an empty trust store. Copying the one from OpenJDK11 fixes the problem
– light_303
Nov 13 '18 at 9:38
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In what cases will HTTP_REFERER be empty
...age in the window/tab.
clicked a link in an external application.
switched from a https URL to a http URL.
switched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the refe...