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Ruby on Rails: How do I add placeholder text to a f.text_field?
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The "placeholder" attribute is only supported by HTML5 supporting browsers, leaving out browsers like Internet Explorer.
– travis-146
Aug 8 '11 at 20:52
1...
How does a Linux/Unix Bash script know its own PID?
... mentions this, and there's a more concrete example here: tldp.org/LDP/abs/html/internalvariables.html . The distinction can be pretty important, as a lot of bash constructs do run in subshells.
– Cascabel
Mar 22 '10 at 16:00
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How to select first and last TD in a row?
... body > P { line-height: 1.3 } You can see at: w3.org/TR/CSS2/selector.html#child-selectors (same page posted by James)
– Francesco
Aug 29 '11 at 10:27
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How to retrieve a single file from a specific revision in Git?
...u could simply redirect that output to any file you want (tldp.org/LDP/abs/html/io-redirection.html).
– VonC
Jun 26 '12 at 10:47
8
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How do Google+ +1 widgets break out of their iframe?
... http://closure-library.googlecode.com/svn/trunk/closure/goog/demos/dialog.html.
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How to convert OutputStream to InputStream?
... InputStream: http://io-tools.sourceforge.net/easystream/tutorial/tutorial.html
// create conversion
final OutputStreamToInputStream<Void> out = new OutputStreamToInputStream<Void>() {
@Override
protected Void doRead(final InputStream in) throws Exception {
LibraryClas...
How to have Emacs auto-refresh all buffers when files have changed on disk?
...sk with this change alone. From https://www.gnu.org/software/emacs/manual/html_node/emacs/Reverting.html:
By default, Auto-Revert mode works using file notifications, whereby changes in the filesystem are reported to Emacs by the OS. You can disable use of file notifications by customizing the ...
jQuery equivalent of JavaScript's addEventListener method
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$( "button" ).on( "click", function(event) {
alert( $( this ).html() );
console.log( event.target );
} );
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<button>test 1</button>
<button>test 2</button...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
... # "?" or "&"
(?:amp;)? # (allow "&amp;", for wrongly HTML-encoded URLs)
) # end non-capturing group
( # group 1
[^=]+ # any character except "=", "&" or "#"; at least once
) # end group 1 - this will be the parameter's name
(?...
In log4j, does checking isDebugEnabled before logging improve performance?
... improve the performance.
https://logging.apache.org/log4j/2.0/manual/api.html#Java_8_lambda_support_for_lazy_logging
import java.util.logging.Logger;
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Logger.getLogger("hello").info(() -> "Hello " + name);
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