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Python Sets vs Lists
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It depends on what you are intending to do with it.
Sets are significantly faster when it comes to determining if an object is present in the set (as in x in s), but are slower than lists when it comes to iterating over their contents.
You can use the timeit modu...
How to find the last day of the month from date?
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t returns the number of days in the month of a given date (see the docs for date):
$a_date = "2009-11-23";
echo date("Y-m-t", strtotime($a_date));
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Using CSS for a fade-in effect on page load
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}
#test p.load {
opacity: 1;
}
Plain JavaScript (not in the demo)
document.getElementById("test").children[0].className += " load";
Demo
http://jsfiddle.net/SO_AMK/a9dnW/
Browser Support
All modern browsers and Internet Explorer 10 (and later): http://caniuse.com/#feat=css-transiti...
Best way to check if a Data Table has a null value in it
...bject value = row["ColumnName"];
if (value == DBNull.Value)
// do something
else
// do something else
}
More information about the DBNull class
If you want to check if a null value exists in the table you can use this method:
public static bool HasNull(this DataTable ta...
What's the best way to use R scripts on the command line (terminal)?
It's very convenient to have R scripts for doing simple plots from the command line. However, running R from bash scripts is not convenient at all. The ideal might be something like
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How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
...ts.try(:logger=, Logger.new('/dev/null'))
Rails::Rack::Logger.class_eval do
def call_with_quiet_assets(env)
previous_level = Rails.logger.level
Rails.logger.level = Logger::ERROR if env['PATH_INFO'] =~ %r{^/assets/}
call_without_quiet_assets(env)
ensure
Rails.logger...
Android: Clear the back stack
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Try adding FLAG_ACTIVITY_NEW_TASK as described in the docs for FLAG_ACTIVITY_CLEAR_TOP:
This launch mode can also be used to
good effect in conjunction with
FLAG_ACTIVITY_NEW_TASK: if used to
start the root activity of a task, it
will bring any currently running
in...
No Activity found to handle Intent : android.intent.action.VIEW
... I was getting a problem when the url was encoded, so note you may need to do Uri.parse(Uri.decode(encodedString))
– hmac
Nov 7 '19 at 11:09
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IF statement: how to leave cell blank if condition is false (“” does not work)
... a few other options.
edit
To reflect the comments and what you ended up doing: Instead of evaluating to "" enter another value such as 'deleteme' and then search for 'deleteme' instead of blanks.
=IF(ISBLANK(C1),TRUE,(TRIM(C1)="deleteme"))
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Android TextView with Clickable Links: how to capture clicks?
... ClickableSpan() {
public void onClick(View view) {
// Do something with span.getURL() to handle the link click...
}
};
strBuilder.setSpan(clickable, start, end, flags);
strBuilder.removeSpan(span);
}
protected void setTextViewHTML(TextView text, String html)...