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Difference between JSONObject and JSONArray
...es. A JSON object is typically used to contain key/value pairs related to one item.
For example: {"name": "item1", "description":"a JSON object"}
Of course, JSON arrays and objects may be nested inside one another. One common example of this is an API which returns a JSON object containing some m...
OWIN Startup Class Missing
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Create One Class With Name Startup this will help you..
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.MapSignalR();
}
}
...
What is “with (nolock)” in SQL Server?
Can someone explain the implications of using with (nolock) on queries, when you should/shouldn't use it?
16 Answers
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Get person's age in Ruby
...accepted answer will break horribly when trying to work out the age of someone born on the 29th February on a leap year. This is because the call to birthday.to_date.change(:year => now.year) creates an invalid date.
I used the following code instead:
require 'date'
def age(dob)
now = Time.n...
Gson custom seralizer for one variable (of many) in an object using TypeAdapter
...delegate = gson.getDelegateAdapter(this, type);
final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class);
return new TypeAdapter<C>() {
@Override public void write(JsonWriter out, C value) throws IOException {
JsonElement tree = delegate.to...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...th and it still copied. So if you don't want a copy you have to change it one element at a time.
– Cthutu
Jun 6 '14 at 13:06
add a comment
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Why is quicksort better than mergesort?
...n other ?. Is the answer "quick sort is used more than other because after one depth you can switch to heapsort"? .. why not use heapsort in the first place then ? .. just trying to understand ...
– codeObserver
Apr 4 '11 at 7:13
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The simplest possible JavaScript countdown timer? [closed]
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I have two demos, one with jQuery and one without. Neither use date functions and are about as simple as it gets.
Demo with vanilla JavaScript
function startTimer(duration, display) {
var timer = duration, minutes, seconds;
set...
How to rollback a specific migration?
...1
Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many migrations you want to go back.
For example:
rake db:rollback STEP=5
Will also rollback all the migration that happened later (4, 3, 2 and also 1).
To roll back all migr...
Hash String via SHA-256 in Java
...out more information it would be hard to say why you are getting different ones. You should probably open a new question.
– Brendan Long
Aug 9 '10 at 21:16
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