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How do I compare two hashes?
...=> [["c", 3]]
Hash[*difference.flatten]
=> {"c"=>3}
Doing it all in one operation and getting rid of the difference variable:
Hash[*(
(hash3.size > hash1.size) \
? hash3.to_a - hash1.to_a \
: hash1.to_a - hash3.to_a
).flatten]
=> {"c"=>3}
...
Android encryption / decryption using AES [closed]
...= 10;
private static final int keySize = 128;
private static final String cypherInstance = "AES/CBC/PKCS5Padding";
private static final String secretKeyInstance = "PBKDF2WithHmacSHA1";
private static final String plainText = "sampleText";
private static final String AESSalt = "ex...
Difference between List, List, List, List, and List
...u can't mix oranges and apples. You would be able to add an Object to your String list if you could pass a string list to a method that expects object lists. (And not all objects are strings)
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HashSet vs. List performance
...ery very small to get an advantage from List<T>. For a list of short strings, the advantage went away after size 5, for objects after size 20.
1 item LIST strs time: 617ms
1 item HASHSET strs time: 1332ms
2 item LIST strs time: 781ms
2 item HASHSET strs time: 1354ms
3 item LIST strs time: 9...
Rails migration for change column
...ata. I've run into several situations where the existing data, let's say a String can be implicitly converted into the new datatype, let's say Date.
In this situation, it's helpful to know you can create migrations with data conversions. Personally, I like putting these in my model file, and then ...
Comparing object properties in c# [closed]
...ic static bool PublicInstancePropertiesEqual<T>(T self, T to, params string[] ignore) where T : class
{
if (self != null && to != null)
{
Type type = typeof(T);
List<string> ignoreList = new List<string>(ignore);
foreach (System.Reflecti...
How can I get the root domain URI in ASP.NET?
...which has all the pieces broken down for you. It shouldn't be giving you a string. At least not in the version of .net I am using
– JoshBerke
Apr 4 '12 at 19:37
6
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JavaScript - get the first day of the week from current date
...
This is great except this function should be called "setToMonday" as it modifies the date object passed in. getMonday, would return a new Date that is the monday based on the date passed in. A subtle difference, but one that caught me after using this function. Easiest f...
pandas resample documentation
...ffsets), and a section about resampling.
Note that there isn't a list of all the different how options, because it can be any NumPy array function and any function that is available via groupby dispatching can be passed to how by name.
...
store and retrieve a class object in shared preference
...e solution is to transform the pojo into ByteArrayOutPutStream and save as String in the SharedPreferences
– rallat
Jun 6 '12 at 15:22
27
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