v-slot="{row}"

This is a syntax used in Vue.js for binding a variable to a specific slot in a component.

In this case, the variable "row" is being bound to the slot. The slot is a placeholder in the component where content can be inserted. The v-slot directive is used to define named slots in a component.

When using the v-slot directive, you can pass data to the slot by using the v-bind directive to bind a value to a prop on the component.

For example, if you had a component that displayed a list of items, you could use v-slot to pass the data for each item to the component:

<my-list :items="myItems">
<template v-slot:item="{row}">
<li>{{ row.name }}</li>
</template>
</my-list>

In this example, the "item" slot is defined and the "row" variable is bound to it. The "row" variable is then used to access the data for each item in the list.