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How can I add a new key value pair to an existing dictionary?


By : saumya
Date : September 13 2020, 01:00 AM
hop of those help? Julia uses the common dict[key] = value syntax for setting a key-value pair:
code :
julia> dict = Dict(1 => "one")
Dict{Int64,String} with 1 entry:
  1 => "one"

julia> dict[2] = "two"
"two"

julia> dict
Dict{Int64,String} with 2 entries:
  2 => "two"
  1 => "one"
julia> dict
Dict{Int64,String} with 2 entries:
  2 => "two"
  1 => "one"

julia> dict[1] = "foo"
"foo"

julia> dict
Dict{Int64,String} with 2 entries:
  2 => "two"
  1 => "foo"
julia> dict = Dict(1 => "one")
Dict{Int64,String} with 1 entry:
  1 => "one"

julia> setindex!(dict, "two", 2)
Dict{Int64,String} with 2 entries:
  2 => "two"
  1 => "one"


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How to initialize a EC key pair with an existing key pair in JavaCard?


By : muhammed kardoğan
Date : March 29 2020, 07:55 AM
To fix this issue There are methods setW(...) on ECPublicKey and setS(...) on ECPrivateKey.
The tricky part is that your keyPair.getPublic() and keyPair.getPrivate() return general interfaces. You have to cast them:
code :
KeyPair keyPair = new KeyPair(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_256);
ECPublicKey pub = (ECPublicKey) keyPair.getPublic();
ECPrivateKey priv = (ECPrivateKey) keyPair.getPrivate();
pub.setW(pubBytes, (short) 0, (short) pubBytes.length);
priv.setS(privBytes, (short) 0, (short) privBytes.length);
//do not forget to set parameters of your curve to both private and public key HERE!!!

Add a key to existing key value pair in a dictionary


By : Partifer
Date : March 29 2020, 07:55 AM
Does that help I want to add a key to existing key value pair in a dictionary, is the below code is the pythonic way to add a key to a key value pair in a dictionary ?
code :
B = {}
for key, value in A.items():
    B[(key,region)] = A.get((key, region), 0) + value
B = {(key,region): A.get((key, region), 0) + value for key, value in A.items()}

Updating dictionary without overwriting existing key-value pair?


By : Reveka
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I have an input file as below, from which I can construct my dictionary , Try this:
code :
def generate_key_value_pair(filePath, sep='='):
    dict_of_ip = {}
    with open(filePath, "rt") as f:
        for line in f:
            stripped_line = line.strip()
            if stripped_line and stripped_line[0].isdigit():
                #print 'Found Ip'
                slave_properties = {}
                ip = stripped_line
                dict_of_ip[ip] = ''
            elif stripped_line and stripped_line[0].isupper():
                #print "Found attributes")
                key_value = stripped_line.split(sep)
                key = key_value[0].strip()
                value = key_value[1].strip()
                slave_properties[key] = value
                dict_of_ip[ip] = slave_properties

    return dict_of_ip
def generate_key_value_pair(filePath, sep='='):
    dict_of_ip = {}
    with open(filePath, "rt") as f:
        for line in f:
            stripped_line = line.strip()
            if stripped_line and stripped_line[0].isdigit():
                #print 'Found Ip'
                ip = stripped_line
                dict_of_ip[ip] = {}
            elif stripped_line and stripped_line[0].isupper():
                #print "Found attributes")
                key_value = stripped_line.split(sep)
                key = key_value[0].strip()
                value = key_value[1].strip()
                dict_of_ip[ip][key] = value

    return dict_of_ip

Next key/value pair overwrites the existing pair in a hash while trying to add pair with new key


By : user1930839
Date : March 29 2020, 07:55 AM
hope this fix your issue In Ruby mutable objects are passed by reference. It means that when you iterate over seasons in each block this line:
code :
sorted[season] = fruits

How parse a json data that has a dictionary key:value pair? I'm trying to extract the symbol and value pair


By : user3609897
Date : March 29 2020, 07:55 AM
To fix the issue you can do Don't use NSDictionary - use Dictionary type in Swift. Also, you have data and it's not dictionary at all. It's Data type. Use should convert your data to your type. Try use this code:
code :
URLSession.shared.dataTask(with: url) { (data, response, err) in
    guard let data = data else { return }

    let jsonResult = try? JSONSerialization.jsonObject(with: data)

    if let dict = jsonResult as? Dictionary<String, Any>, let rates = dict["rates"] as? Dictionary<String, Double> {
        for (key, value) in rates {
            print(key, value)
            self.mySymbols.append(key)
            self.myValues.append(value)
        }
    }
}.resume()
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