Random color generator
Given this function, I want to replace the color with a random color generator.document.overlay = GPolyline.fromEncoded({color: "#0000FF", weight: 10, points:
Create a dictionary with list comprehension in Python
I like the Python list comprehension syntax.Can it be used to create dictionaries too? For example, by iterating over pairs of keys and values:mydict = {(k,v) for (k,v) in blah blah blah} # doesn't work 1:In Python 2.6 and earlier, the
What's the purpose of the LEA instruction?
For me, it just seems like a funky MOV. What's its purpose and when should I use it? 1:As others have pointed out, LEA (load effective address) is often used as a "trick" to do certain computations, but that's not its primary purpose. Th
What is the difference between char s[] and char *s?
In C, one can use a string literal in a declaration like this:char s[] = "hello";or like this:char *s = "hello";So what is the difference? I want to know what actually happens in terms of storage duration, both at compile and run time.
How do I convert an existing callback API to promises?
I want to work with promises but I have a callback API in a format like:1. DOM load or other one time event:window.onload; // set to callback...window.onload = function(){};2. Plain callback:function request(onChangeHandler){...request(func
What is `type_info::before` useful for?
According to cplusplus.com, the std::type_info::before() function... Returns true if the type precedes the type of rhs in the collation order. The collation order is just an internal order kept by a particular implementation and is not ne
Get rid of leading zeros for date strings in Python? [duplicate]
This question already has an answer here: Python strftime - date without leading 0? 16 answers Is there a nimble way to get rid of leading zeros for da
Split stacks unneccesary on amd64
There seems to be an opinion out there that using a "split stack" runtime model is unnecessary on 64-bit architectures. I say seems to be, because I haven't seen anyone actually say that, only dance around it: The memory usage of a typica
RAILS: How to get has_many associations of a model
how I can get the has_many associations of a model?For example if I have this class:class A I would a method like this:A.get_has_manythat return[B,C]Is it possible? Thanks! 1:You should be using ActiveRecord reflections.Then you can type
Convert array-of-hashes to a hash-of-hashes, indexed by an attribute of the hashes
I've got an array of hashes representing objects as a response to an API call. I need to pull data from some of the hashes, and one particular key serves as an id for the hash object. I would like to convert the array into a hash with the k
nhibernate mapping: A collection with cascade=“all-delete-orphan” was no longer referenced
I am having some probs with my fluent mappings. I have an entity with a child collection of entities i.e Event and EventItems for example.If I set my cascade mapping of the collection to AllDeleteOrphan I get the following error when saving
What should the return type be when the function might not have a value to return?
In the old days, you might have a function like this:const char* find_response(const char* const id) const;If the item could not be found, then a null could be returned to indicate the fact, otherwise obviously return the relevant string.Bu
How to combine filter and map in scala?
I have List[Int] in Scala. The List is List(1,2,3,4,5,6,7,8,9,10). I want to filter the list so that it only has even numbers. And I want to muliply the numbers with 2. Is it possible?I hope I have explained the question clearly. If u have
com.google.gson.internal.LinkedHashTreeMap cannot be cast to my object
I have JSON file looks like { "SUBS_UID" : { "featureSetName" : "SIEMENSGSMTELEPHONY MULTISIM", "featureName" : "MULTISIMIMSI", "featureKey" : [{ "key" : "SCKEY", "valueType" : 0,
Python: finding lowest integer
I have the following code:l = ['-1.2', '0.0', '1']x = 100.0for i in l: if i The code should find the lowest value in my list (-1.2) but instead when i print 'x' it finds the value is still 100.0Where is my code going wrong? 1:To find
Changing cell color using apache poi
I'm using Apache POI to read data in a spreadsheet of part numbers. I look up the part number in our database, if we have a CAD drawing of the part I color the part number cell green, if we don't I color it red. After the processing is do
Get attribute of child element
If I have the following markup: Hours How can I target the tag within the anchor tag? There are five other similar tag entries, each with a different value for sortcat= 1:$(".sort").click(function(){ var cat = $(this).
How to remove all the polylines from a map
FollowingHow to draw a path between two markersI had to add lot of polylines between two markers, to make a path.One of the markers is draggable, lets say source is draggable.So, when user starts dragging the marker, the path previously dra
Getting index of item while processing a list using map in python
While processing a list using map(), I want to access index of the item while inside lambda. How can I do that?For exampleranked_users = ['jon','bob','jane','alice','chris']user_details = map(lambda x: {'name':x, 'rank':?}, ranked_users)How
How to Map AD Groups to User Role Spring Security LDAP
I have a web application built using Java Spring MVC.I'm just setting up spring security connecting to an LDAP server for authentication.I've successfully set it up so that I am able to login to my application but I can't find anything to h
Organizing memcache keys
Im trying to find a good way to handle memcache keys for storing, retrieving and updating data to/from the cache layer in a more civilized way.Found this pattern, which looks great, but how do I turn it into a functional part of a PHP appli
Do not serialize Entity Framework class references in JSON (ServiceStack.Text library)
As most of the people I've also ran into a problem of circular reference error when serializing (terrible) EF objects to JSON. Doing db.Detach(efObject) helps - but I still get garbage like "EntityKey" outputted.So I was wondering if there
Recursive JSON view of an entity with one-to-many relationship in REST controller
I'm using SpringBoot and JPA to build a REST interface. Now, I have a strange JSON returned for the list of products fetched from the database. Let's say that I have:@Entitypublic class Product { @Id @GeneratedValue(strategy = Generat
Android - How to open google maps with Intent and KML?
I need to open google maps using kml file wich already exists on sdcard. (/sdcard/example.kml)I tried:Open local KML File in Google Maps on Androidthis answer is wrong, when click on link, maps open, but search for location "file:///sdcard/
Do commercial (paid) iPhone apps have to pay a license to Google for Maps? [closed]
I know that happens with commercial websites so I was wondering if commercial iPhone apps that use the MapKit (especially those that generate a lot of traffic) need to get any sort of license from Google Maps as well.My best guess would be