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How to check for null in Twig?

... answered Dec 23 '10 at 16:12 NikiCNikiC 93.7k3030 gold badges176176 silver badges217217 bronze badges ...
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Combine Date and Time columns using python pandas

...you to apply to_datetime: In [11]: df['Date'] + ' ' + df['Time'] Out[11]: 0 01-06-2013 23:00:00 1 02-06-2013 01:00:00 2 02-06-2013 21:00:00 3 02-06-2013 22:00:00 4 02-06-2013 23:00:00 5 03-06-2013 01:00:00 6 03-06-2013 21:00:00 7 03-06-2013 22:00:00 8 03-06-2013 23:00:00 ...
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How to Free Inode Usage?

I have a disk drive where the inode usage is 100% (using df -i command). However after deleting files substantially, the usage remains 100%. ...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

...ndom_string(length integer) returns text as $$ declare chars text[] := '{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}'; result text := ''; i integer := 0; begin if length < 0 then raise exception 'Given le...
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HTML5: number input type that takes only integers?

...n achieve with HTML only (documentation): <input type="number" min="0" step="1"/> share | improve this answer | follow | ...
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IEnumerable and Recursion using yield return

... answered Jan 13 '10 at 10:29 Marcin SeredynskiMarcin Seredynski 6,65722 gold badges1818 silver badges2626 bronze badges ...
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UIScrollView not scrolling

...entSize = contentView.frame.size; //sets ScrollView content size Swift 4.0 let myScrollView let contentView // scrollview won't scroll unless content size explicitly set myScrollView.addSubview(contentView)//if the contentView is not already inside your scrollview in your xib/StoryBoard doc my...
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How to Set Opacity (Alpha) for View in Android

... answered May 25 '10 at 11:52 RoToRaRoToRa 33.7k1010 gold badges6060 silver badges9595 bronze badges ...
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Fragment onResume() & onPause() is not called on backstack

... | edited May 22 '14 at 10:06 Stephen Ostermiller 17.6k88 gold badges7070 silver badges9191 bronze badges ...
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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets

... | edited Sep 26 '12 at 20:10 leggetter 14.3k11 gold badge4747 silver badges5858 bronze badges answered...