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How to read from a file or STDIN in Bash?
...
Here is the simplest way:
#!/bin/sh
cat -
Usage:
$ echo test | sh my_script.sh
test
To assign stdin to the variable, you may use: STDIN=$(cat -) or just simply STDIN=$(cat) as operator is not necessary (as per @mklement0 comment).
To parse each line from the standard input, t...
Why does InetAddress.isReachable return false, when I can ping the IP address?
... many cases. You can scroll to the bottom to see my alternative for simply testing if you're online and capable of resolving external hosts (i.e. google.com) ... Which generally seems to work on *NIX machines.
The issue
There is alot of chatter about this :
Here are other, similar questions :...
Count rows with not empty value
...rly complex, or fail in particular edge cases that I've enumerated in this test sheet:
Google Spreadsheet - CountA Test - Demo
For why CountA works the wonky way it does, see my answer here
share
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How to split a string in Java
...tring[] parts = string.split(Pattern.quote(".")); // Split on period.
To test beforehand if the string contains certain character(s), just use String#contains().
if (string.contains("-")) {
// Split it.
} else {
throw new IllegalArgumentException("String " + string + " does not contain -"...
Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
...l = streamA.isParallel() || streamB.isParallel();
return iteratorToFiniteStream(iteratorC, parallel);
}
public static <T> Stream<T> iteratorToFiniteStream(Iterator<T> iterator, boolean parallel) {
final Iterable<T> iterable = () -> iterator;
return StreamSuppo...
How can I scale an entire web page with CSS?
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I've tested Opera 10b2 and it doesn't seem to support it. Firefox nightly behaves oddly (zoomed fragment disappears). IE5/6 are buggy. Works fine in WebKit only.
– Kornel
Jul 22 '09 at 11:39
...
Select arrow style change
...-appearance:none; /* Safari and Chrome */
appearance:none;
}
Haven't tested, but should work.
EDIT: It looks like Firefox doesn't support this feature up until version 35 (read more here)
There is a workaround here, take a look at jsfiddle on that post.
...
Absolute vs relative URLs
...to:
switch to another scheme (e.g. http -> https)
switch domain names (test.yourdomain.com -> yourdomain.com)
In the first example what will happen is that you will get warnings about unsafe content being requested on the page. Because all your URLs are hardcoded to use http(://yourdomain.co...
How to dynamically update a ListView on Android [closed]
...he EditText into the Filter. Turns out that is pretty easy. To run a quick test, add this line to your onCreate() call
adapter.getFilter().filter(s);
Notice that you will need to save your ListAdapter to a variable to make this work - I have saved my ArrayAdapter<String> from earlier into a...
Change an HTML5 input's placeholder color with CSS
...is just cut off if it doesn’t fit – size your input elements in em and test them with big minimum font size settings. Don’t forget translations: some languages need more room for the same word.
Browsers with HTML support for placeholder but without CSS support for that (like Opera) should be ...