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Drop rows with all zeros in pandas data frame
...his question about once a month and always have to dig out the best answer from the comments:
df.loc[(df!=0).any(1)]
Thanks Dan Allan!
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How to reset a timer in C#?
...cted, in
milliseconds. Specify
Timeout.Infinite to prevent the
timer from restarting. Specify zero
(0) to restart the timer immediately.
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do {…} while(false)
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@Paul: Nothing prevents you from adding braces around a bunch of statements to force this behavior with goto.
– erikkallen
Feb 23 '10 at 11:57
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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
... is, as you've shown.) I would have expected the evaluated result of true (from the first operator invocation, cause by ||) to be "passed along" to the if statement. That's certainly what would happen if you put a function call in there, for example.
– Dan Tao
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Can I use CoffeeScript instead of JS for node.js?
...e, if you have lib.coffee in a directory, you can write
require './lib'
from another CoffeeScript file in the same directory. (In order to do this from a JavaScript file, you'll have to add require 'coffee-script' at the top.) So, you never have to do compilation explicitly under Node, unless you...
How to determine if an NSDate is today?
...ndarUnitEra | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:aDate];
NSDateComponents *today = [[NSCalendar currentCalendar] components:NSCalendarUnitEra | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:[NSDate date]];
if([today day] == [otherDay day] &a...
How to parse date string to Date? [duplicate]
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Runs fine here (after removing String from your 2nd code line). Your problem lies somewhere else.
– BalusC
Dec 21 '10 at 5:02
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How to view/delete local storage in Firefox?
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From Firefox 34 onwards you now have an option for Storage Inspector, which you can enable it from developer tools settings
Once there, you can enable the Storage options under Default Firefox Developer tools
Updated 27-3-1...
What's the (hidden) cost of Scala's lazy val?
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This is taken from the scala mailing list and gives implementation details of lazy in terms of Java code (rather than bytecode):
class LazyTest {
lazy val msg = "Lazy"
}
is compiled to something equivalent to the following Java code:
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How to configure Fiddler to listen to localhost?
...eblog.west-wind.com/posts/2008/Mar/14/Debugging-Http-or-Web-Services-Calls-from-ASPNET-with-Fiddler.
To be brief, the app.config change is:
<system.net>
<defaultProxy>
<proxy proxyaddress="http://127.0.0.1:8888" />
</defaultProxy>
</system.net>
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