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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...
Measuring the distance between two coordinates in PHP
...atitudeFrom, $longitudeFrom, $latitudeTo, $longitudeTo, $earthRadius = 6371000)
{
// convert from degrees to radians
$latFrom = deg2rad($latitudeFrom);
$lonFrom = deg2rad($longitudeFrom);
$latTo = deg2rad($latitudeTo);
$lonTo = deg2rad($longitudeTo);
$latDelta = $latTo - $latFrom;
$lo...
Wrap long lines in Python [duplicate]
...
def fun():
print(('{0} Here is a really long '
'sentence with {1}').format(3, 5))
Adjacent string literals are concatenated at compile time, just as in C. http://docs.python.org/reference/lexical_analysis.html#string-literal-concate...
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...l evaluate to true if value is not:
null
undefined
NaN
empty string ("")
0
false
The above list represents all possible falsy values in ECMA-/Javascript. Find it in the specification at the ToBoolean section.
Furthermore, if you do not know whether a variable exists (that means, if it was decla...
Insert Update stored proc on SQL Server
...
answered Aug 17 '08 at 7:22
binOrbinOr
2,4512222 silver badges1818 bronze badges
...
Sticky and NON-Sticky sessions
...astic Load Balancer and sticky sessions here : http://aws.typepad.com/aws/2010/04/new-elastic-load-balancing-feature-sticky-sessions.html
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follo...
Show DialogFragment with animation growing from a point
...
+100
Being DialogFragment a wrapper for the Dialog class, you should set a theme to your base Dialog to get the animation you want:
publi...
Symbolic links and synced folders in Vagrant
...llh.com/…
– jdunk
Mar 15 '15 at 8:06
5
Running vagrant up in a shell with admin rights is all t...
How to implement classic sorting algorithms in modern C++?
...
+50
Algorithmic building blocks
We begin by assembling the algorithmic building blocks from the Standard Library:
#include <algorithm...
How do I animate constraint changes?
...ions:^{
self._addBannerDistanceFromBottomConstraint.constant = 0;
[self.view layoutIfNeeded]; // Called on parent view
}];
bannerIsVisible = TRUE;
}
Swift 3
UIView.animate(withDuration: 5) {
self._addBannerDistanceFromBottomConstraint.constant = 0
self....