How to map CAPS LOCK key in VIM?
Linux? With X, use xmodmap to alter the key mapping, e.g. xmodmap -e ‘clear Lock’ -e ‘keycode 0x42 = Escape’ Will map Esc to the CapsLock key. Google for more examples.
map
Go map of functions
Are you trying to do something like this? I’ve revised the example to use varying types and numbers of function parameters. package main import “fmt” func f(p string) { fmt.Println(“function f parameter:”, p) } func g(p string, q int) { fmt.Println(“function g parameters:”, p, q) } func main() { m := map[string]interface{}{ “f”: f, “g”: … Read more
Map with concurrent access
Multiple readers, no writers is okay: https://groups.google.com/d/msg/golang-nuts/HpLWnGTp-n8/hyUYmnWJqiQJ One writer, no readers is okay. (Maps wouldn’t be much good otherwise.) Otherwise, if there is at least one writer and at least one more either writer or reader, then all readers and writers must use synchronization to access the map. A mutex works fine for this.
Iterating through a golang map
For example, package main import “fmt” func main() { type Map1 map[string]interface{} type Map2 map[string]int m := Map1{“foo”: Map2{“first”: 1}, “boo”: Map2{“second”: 2}} //m = map[foo:map[first: 1] boo: map[second: 2]] fmt.Println(“m:”, m) for k, v := range m { fmt.Println(“k:”, k, “v:”, v) } } Output: m: map[boo:map[second:2] foo:map[first:1]] k: boo v: map[second:2] k: foo … Read more
How to count items in a Go map?
Use len(m). From http://golang.org/ref/spec#Length_and_capacity len(s) string type string length in bytes [n]T, *[n]T array length (== n) []T slice length map[K]T map length (number of defined keys) chan T number of elements queued in channel buffer Here are a couple examples ported from the now-retired SO documentation: m := map[string]int{} len(m) // 0 m[“foo”] = … Read more
Loop through a Map with JSTL [duplicate]
Like this: <c:forEach var=”entry” items=”${myMap}”> Key: <c:out value=”${entry.key}”/> Value: <c:out value=”${entry.value}”/> </c:forEach>
Runtime error: assignment to entry in nil map
You have not initialized your inner map. Before your for loop you can add m[“uid”] = make(map[string]T) and then assign the name.