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Remove the error indicator from a previously-validated EditText widget
... am using an EditText widget, and I am validating it with the setError() method of EditText and it validates correctly.
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Locking a file in Python
...It will be accessed from multiple Python processes at once. I have found some solutions online, but most fail for my purposes as they are often only Unix based or Windows based.
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jQuery/Javascript function to clear all the fields of a form [duplicate]
...not clearing fields - see update.
You can use JavaScript's native reset() method to reset the entire form to its default state.
Example provided by Ryan:
$('#myForm')[0].reset();
Note: This may not reset certain fields, such as type="hidden".
UPDATE
As noted by IlyaDoroshin the same thing ca...
git - diff of current changes before committing
...s the job. Staging area is the data from which the next commit will be formed by git commit.
P. S. Good reading (IMO) for Git beginners:
https://git-scm.com/book/en/v2 (most chapters; it explains the model behind Git and answers most of typical questions)
and then immediately http://gitready.com...
How to force file download with PHP
...be downloaded upon the user visiting a web page with PHP. I think it has something to do with file_get_contents , but am not sure how to execute it.
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Regex to check whether a string contains only numbers [duplicate]
...f" . I would like to check if the hash only contains numbers. Did I miss something?
21 Answers
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How do I programmatically determine operating system in Java?
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You can use:
System.getProperty("os.name")
P.S. You may find this code useful:
class ShowProperties {
public static void main(String[] args) {
System.getProperties().list(System.out);
}
}
All it does is print out all the properties provided b...
Producing a new line in XSLT
...newline approach if you use anything that might reformat your XSL file and mess with the whitespace.
– Ian Roberts
Nov 9 '12 at 0:17
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NullPointerException in Java with no StackTrace
...hen an exception (typically a NullPointerException) occurs for the first time, the full stack trace is printed and the JVM remembers the stack trace (or maybe just the location of the code). When that exception occurs often enough, the stack trace is not printed anymore, both to achieve better perfo...
How can I get a web site's favicon?
...y system tray so that I can open often-used sites/folders/files from the same place. Getting the default icons from my system for known file types isn't terribly complicated, but I don't know how to get the favicon from a website. (SO has the grey->orange stack icon in the address bar for instance)
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