You could delete the set altogether with [`DEL`][1].

    DEL metasyn

From redis console,

    redis&gt; SMEMBERS metasyn
    1) &quot;foo&quot;
    2) &quot;bar&quot;
    redis&gt; DEL metasyn
    (integer) 1
    redis&gt; SMEMBERS metasyn
    (empty list or set)

  [1]: http://redis.io/commands/del

I am currently using the same C# DTOs to pull data out of CouchDB, via LoveSeat which I am going to return JSON via an ASP MVC controller.

I am using the NewtonSoft library to seralise my DTOs before sending them down through the controller. 

However, as CouchDB also uses NewtonSoft it is also respecting the property level NewtonSoft attributes such as 

    [JsonIgnore]
    [JsonProperty(&quot;foo&quot;)]

Is there anyway to tell the newtonsoft library to ignore these attributes explicitly? LoveSeat allows me to provide my own implementation of IObjectSerializer, which gives me full control over netwonsofts JsonSerializerSettings. So, can I ignore the attributes by using those settings ? 

I ask as the only alternative I can see at this point, is to dupe my DTOs. While not that&#39;s not terrible, it isn&#39;t great either. 

The only other way I can see is to bring in my own version of the  Newtonsoft.Json source into my project, with a different assembly name etc etc. But this way madness definitely lies and I will just dupe the DTOs before I go down this road.

Newtonsoft ignore attributes?

&gt; **Possible Duplicate:**  
&gt; https://stackoverflow.com/questions/448910/makefile-variable-assignment

&lt;!-- End of automatically inserted text --&gt;

I only know very basic `makefile` syntax, and was reading through another project&#39;s `makefile` and came across `:=` for macro declaration. Why would they use that?

In other words, is there any difference between

    MYMACRO = hi i&#39;m a macro

and

    MYMACRO := hi i&#39;m a macro
?

:= vs = in make macros

Maybe I&#39;m just blind, but I don&#39;t see an explicit [set command][1] in Redis for emptying an existing set (without emptying the entire database). For the time being, I&#39;m doing a set difference on the set with itself and storing it back into itself:

    redis&gt; SMEMBERS metasyn
    1) &quot;foo&quot;
    2) &quot;bar&quot;
    redis&gt; SDIFFSTORE metasyn metasyn metasyn
    (integer) 0
    redis&gt; SMEMBERS metasyn
    (empty list or set)

But that looks a little silly... is there a better way to do this?


  [1]: http://redis.io/commands#set

Empty/delete a set in Redis?

Maybe I'm just blind, but I don't see an explicit <a href="http://redis.io/commands#set" target="_blank" rel="noopener noreferrer">set command</a> in Redis for emptying an existing set (without emptying the entire database). For the time being, I'm doing a set difference on the set with itself and storing it back into itself:
<pre><code class="hljs language-sql">redis> SMEMBERS metasyn
1) "foo"
2) "bar"
redis> SDIFFSTORE metasyn metasyn metasyn
(integer) 0
redis> SMEMBERS metasyn
(empty list or set)
</code></pre>
But that looks a little silly... is there a better way to do this?

I stumbled across a blog post detailing how to implement a powerset function in Python. So I went about trying my own way of doing it, and discovered that Python apparently cannot have a set of sets, since set is not hashable. This is irksome, since the definition of a powerset is that it is a set of sets, and I wanted to implement it using actual set operations.

    &gt;&gt;&gt; set([ set() ])
    Traceback (most recent call last):
      File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
    TypeError: unhashable type: &#39;set&#39;

Is there a good reason Python sets are not hashable?

Why aren&#39;t Python sets hashable?

How do I get the contents of a `set()` in `list[]` form in Python?

I need to do this because I need to save the collection in Google App Engine and Entity property types can be lists, but not sets.  I know I can just iterate over the whole thing, but it seems like there should be a short-cut, or &quot;best practice&quot; way to do this.

How to get a list from a set?

It&#39;s difficult to explain the case by words, let me give an example:

    var myObj = {
        &#39;name&#39;: &#39;Umut&#39;,
        &#39;age&#39; : 34
    };

    var prop = &#39;name&#39;;
    var value = &#39;Onur&#39;;

    myObj[name] = value; // This does not work

    eval(&#39;myObj.&#39; + name) = value;   //Bad coding ;)

How can I set a variable property with variable value in a JavaScript object?

How to set a Javascript object values dynamically?

I am trying to convert a set to a list in Python 2.6. I&#39;m using this syntax:

    first_list = [1,2,3,4]
    my_set=set(first_list)
    my_list = list(my_set)

However, I get the following stack trace:

    Traceback (most recent call last):
      File &quot;&lt;console&gt;&quot;, line 1, in &lt;module&gt;
    TypeError: &#39;set&#39; object is not callable

How can I fix this?

How to convert a set to a list in python?

&gt; Given a set of numbers, divide the numbers into two subsets such that difference between the sum of numbers in two subsets is minimal.

This is the idea that I have, but I am not sure if this is a correct solution:

1. Sort the array
2. Take the first 2 elements. Consider them as 2 sets (each having 1 element)
3. Take the next element from the array. 
4. Decide in which set should this element go (by computing the sum =&gt; it should be minimum)
5. Repeat

Is this the correct solution? Can we do better?

How to divide a set into two subsets such that difference between the sum of numbers in two sets is minimal?

I like to use verbose names in Redis, for instance `set-allBooksBelongToUser:$userId`.

Is this ok or does that impact performance?

Does name length impact performance in Redis?

We have few node.js processes that should be able to pass messages, 
What&#39;s the most efficient way doing that?
How about using node_redis pub/sub

**EDIT:** the processes might run on different machines

What&#39;s the most efficient node.js inter-process communication library/method?

How do I run Redis on Windows? The Redis download page just seems to offer *nix options.

Can I run Redis natively on Windows?

How do I run Redis on Windows?

I would like to remove the debugging mode. I am using `express`, `redis`, `socket.io` and `connect-redis`, but I do not know where the debugging mode comes from.

![Node debug][1]

  [1]: http://i.stack.imgur.com/RHk8h.jpg

Someone has an idea?

How to remove debugging from an Express app?

I want to delete all keys. I want everything wiped out and give me a blank database. 

Is there a way to do this in [Redis][1] client?

  [1]: http://en.wikipedia.org/wiki/Redis_%28data_store%29


Content Type	Original Author	Original Content on Stackoverflow
Question	Abe Voelker	View Question on Stackoverflow
Solution 1 - Set	Anurag	View Answer on Stackoverflow

Empty/delete a set in Redis?

Set Problem Overview

Set Solutions

Solution 1 - Set

:= vs = in make macros

Newtonsoft ignore attributes?

Attributions