How to Add a String in a Certain Position

How to add a string in a certain position?

No. Python Strings are immutable.

>>> s='355879ACB6'
>>> s[4:4] = '-'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'str' object does not support item assignment

It is, however, possible to create a new string that has the inserted character:

>>> s[:4] + '-' + s[4:]
'3558-79ACB6'

Inserting string at position x of another string

var a = "I want apple";var b = " an";var position = 6;var output = [a.slice(0, position), b, a.slice(position)].join('');console.log(output);

Insert a string at a specific index

You could prototype your own splice() into String.

Polyfill

if (!String.prototype.splice) {
    /**
     * {JSDoc}
     *
     * The splice() method changes the content of a string by removing a range of
     * characters and/or adding new characters.
     *
     * @this {String}
     * @param {number} start Index at which to start changing the string.
     * @param {number} delCount An integer indicating the number of old chars to remove.
     * @param {string} newSubStr The String that is spliced in.
     * @return {string} A new string with the spliced substring.
     */
    String.prototype.splice = function(start, delCount, newSubStr) {
        return this.slice(0, start) + newSubStr + this.slice(start + Math.abs(delCount));
    };
}

Example

String.prototype.splice = function(idx, rem, str) {    return this.slice(0, idx) + str + this.slice(idx + Math.abs(rem));};
var result = "foo baz".splice(4, 0, "bar ");
document.body.innerHTML = result; // "foo bar baz"

Add string in a certain position in column in dataframe

You can perform the operation you presented on a list but you have a column in a dataframe so its (a bit) different.

So while you can do this:

hash = "355879ACB6"
hash = hash[:4] + '-' + hash[4:]

in order to do this on a dataframe you can do it in at least 2 ways:

consider this dummy df:

    LOCATION    Hash
0   USA         355879ACB6
1   USA         455879ACB6
2   USA         388879ACB6
3   USA         800879ACB6
4   JAPAN       355870BCB6
5   JAPAN       355079ACB6

A. vectorization: the most efficient way

df['new_hash']=df['Hash'].str[:4]+'-'+df['Hash'].str[4:]

    LOCATION    Hash        new_hash
0   USA         355879ACB6  3558-79ACB6
1   USA         455879ACB6  4558-79ACB6
2   USA         388879ACB6  3888-79ACB6
3   USA         800879ACB6  8008-79ACB6
4   JAPAN       355870BCB6  3558-70BCB6
5   JAPAN       355079ACB6  3550-79ACB6

B. apply lambda: intuitive to implement but less attractive in terms of performance

df['new_hash'] = df.apply(lambda x: x['Hash'][:4]+'-'+x['Hash'][4:], axis=1)

How to insert a character in a string at a certain position?

int j = 123456;
String x = Integer.toString(j);
x = x.substring(0, 4) + "." + x.substring(4, x.length());

Insert value into a string at a certain position?

You can't modify strings; they're immutable. You can do this instead:

txtBox.Text = txtBox.Text.Substring(0, i) + "TEXT" + txtBox.Text.Substring(i);

Insert into a certain position in a string

This should work:

string s = "MOT1-G-PRT45-100";
int index = ... // position to insert
string res = s.Insert(index, c + separator);

Append to String at certain position

Use the insert method.

info.insert(19, Misc.toTimestampLiteral(currentDate));

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