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Why are Python lambdas useful? [closed]
...seful in GUI programming. For example, lets say you're creating a group of buttons and you want to use a single paramaterized callback rather than a unique callback per button. Lambda lets you accomplish that with ease:
for value in ["one","two","three"]:
b = tk.Button(label=value, command=lamb...
Create space at the beginning of a UITextField
...
Great! But If you set textField.clearButtonMode = .always, you have to set only the left padding. The right padding will move the clear button to the right.
– Peter Kreinz
Dec 30 '16 at 14:45
...
Can I access a form in the controller?
..."ctrl.myForm">
...inputs
Dirty? {{ctrl.myForm.$dirty}}
<button ng-click="ctrl.saveChanges()">Save</button>
</form>
</div>
Then you can access the FormController in your code like:
function MyController () {
var vm = this;
vm.saveChanges = saveChang...
How to set data attributes in HTML elements
...e, see setAttribute(), dataset(), attr() below. Change the value, push the button several times and see the console.
$("#button").on("click", function() {
var field = document.querySelector("#textfield")
switch ($("#method").val()) {
case "setAttribute":
field.setAttribute("...
android EditText - finished typing event
...es etc. If you only give the user one Input field and force him to press a button before he can advance to other fields then that's obviously a different story...
– AgentKnopf
Apr 30 '12 at 21:15
...
Event binding on dynamically created elements?
...parent that exists at the time the event is bound is fine. For example
$('.buttons').on('click', 'button', function(){
// do something here
});
would apply to
<div class="buttons">
<!-- <button>s that are generated dynamically and added here -->
</div>
...
What is the `data-target` attribute in Bootstrap 3?
... HTML Element that will be changed.
Modal Example Code from BS3:
<!-- Button trigger modal -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="...
Linq Query keeps throwing “Unable to create a constant value of type System.Object…”, Why?
...
In my case, I changed the direct call of (sender as Button).Text to indirect call using a temp var, has worked.
working code:
private void onTopAccBtnClick(object sender, EventArgs e)
{
var name = (sender as Button).Text;
accountBindingSource.Position =
...
What is the meaning of addToBackStack with null parameter?
...he transaction and bring back the
previous fragment by pressing the Back button.
If you add multiple changes to the transaction (such as another add()
or remove()) and call addToBackStack(), then all changes applied
before you call commit() are added to the back stack as a single
transa...
What's the use of Jade or Handlebars when writing AngularJs apps
...="MyController">
<input ng-model="foo" value="bar">
<!-- Button tag with ng-click directive, and string expression 'buttonText' wrapped in "{{ }}" markup -->
<button ng-click="changeFoo()">{{buttonText}}</button>
<script src="angular.js">
</body>
&...