watch

How to Properly Use Vue Router beforeRouteEnter or Watch to trigger method in Single File Component?

由 醉酒当歌 提交于 2019-12-10 14:52:30
问题 I'm working on an app in Vue.js using Single File Components and Vue Router. I have a Search component where I need to execute a method to re-populate search results each time a user visits the route. The method executes correctly the first time the route is visited because of the "create" hook: created: function() { this.initializeSearch(); }, However, when the user leaves the route (to register or log into the app for instance), and returns to the Search page, I can't seem to find a way to

Understanding Watch window in VisualStudio 2010

由 独自空忆成欢 提交于 2019-12-10 11:04:48
问题 I cannot understand what the part of the object within square bracket means ( [bsm::Material] see pic below ). I would expect the object ml of type MaterialLayer to be composed only of a part of type Object (base class) + two fields thickness and material (a pointer to Material). So, what is the part between square brackets, shown by Visual Studio 2010 in its Watch window? Here is the definition of the Material, Object, and MaterialLayer classes: class Object { public: // Methods }; class

Watch route changes in Vue.js with Typescript

由 笑着哭i 提交于 2019-12-10 02:39:39
问题 I'd like to detect changes in my URL in a Vue.js application using TypeScript. In JavaScript this can be done as follows: watch: { '$route': { handler: 'onUrlChange', immediate: true, deep: true } }, onUrlChange(newUrl){ // Some action } How could I do the same in TypeScript? 回答1: I found the solution here: https://github.com/kaorun343/vue-property-decorator It can be done like this: @Watch('$route', { immediate: true, deep: true }) onUrlChange(newVal: any) { // Some action } 来源： https:/

$watch a service variable or $broadcast an event with AngularJS

由 半腔热情 提交于 2019-12-09 17:50:08
问题 I'm using a service to share data between controllers. The application has to update the DOM when a variable is modified. I've found two ways to do that, you can see the code here: http://jsfiddle.net/sosegon/9x4N3/7/ myApp.controller( "ctrl1", [ "$scope", "myService", function( $scope, myService ){ $scope.init = function(){ $scope.myVariable = myService.myVariable; }; }]); myApp.controller( "ctrl2", [ "$scope", "myService", function( $scope, myService ){ $scope.increaseVal = function(){ var

Find specific text in VBA watch list

由 余生颓废 提交于 2019-12-08 19:33:58
问题 The VBA watch list allows you to monitor variables as you step through your macro line by line. Is there a way to expand out all the properties of objects contained within the watch list and search through them for specific text? A single line from the watch list can be copied into notepad or word etc., but there does not appear to be a way to export the entire contents of the watch list or search through all the lines at one time. I am trying to determine what the specific property of an

Angularjs directive creates watches

由 倾然丶 夕夏残阳落幕 提交于 2019-12-08 10:37:46
问题 I have an angular directive that creates a numeric spinner ( <input type="number> ) which one can pass in a minimum and maximum to. However I have noticed that angular will create a watch for the min and max values passed to the directive, as well as where min and max are used in the template. This is a problem as in reality there will be a number more paramaters that can be passed in, and this is inside of a large ng-repeat . The directive is as follows: .directive('inputNumber', function ()

__defineSetter__ on innerHTML stops it from rendering

由 僤鯓⒐⒋嵵緔 提交于 2019-12-08 09:38:27
问题 i'm trying to create a watch method for HTML elements, using __define[GS]etter__ when a property is changed. It reacts just fine when i set the value, but if the property listened to, is innerHTML, it somehow fails to render the given string. So basically, when im adding something to innerHTML it doesn't show. Im using the watch method described in this previous question: Watch for object properties changes in JavaScript I could of cause just not listen to innerHTML changes, but i'm also

Watch with Process Substitution

由 喜你入骨 提交于 2019-12-08 05:07:58
问题 I often run the command squeue -u $USER | tee >(wc -l) where squeue is a Slurm command to see how many jobs you are running. This gives me both the output from squeue and automatically tells how many lines are in it. How can I watch this command? watch -n.1 "squeue -u $USER | tee >(wc -l)" results in Every 0.1s: squeue -u randoms | tee >(wc -l) Wed May 9 14:46:36 2018 sh: -c: line 0: syntax error near unexpected token `(' sh: -c: line 0: `squeue -u randoms | tee >(wc -l)' 回答1: From the watch

$rootScope.$watch triggered twice

由 ♀尐吖头ヾ 提交于 2019-12-08 04:26:25
I want to trigger a new Chat once the variable newChat is being changed like this: $rootScope.newChat = { roomId: roomId, friendId: friendId }; in my ChatController I $watch the variable like this: $rootScope.$watch('newChat', function (data) { /*do stuff*/ } this works on my page after the first reload of the page without any problems. But for the first load this $watch gets triggered twice which causes issues on some other parts of the chat. I checked the value of newChat . Both times the value is exactly the same. No other parts of my application use the $rootScope.newChat Variable Why is

How can I watch for changes to an expression in the Perl debugger?

由 此生再无相见时 提交于 2019-12-07 15:56:57
问题 With the Perl debugger, I know I can set breakpoints at certain lines of code with the b command. Can I get the debugger to stop as soon as the contents of a variable has changed? 回答1: You can create watch points using the w command in the Perl debugger. Crash course on the w debugger command: Create a watch-expression by typing w and then an expression that will monitored for changes: DB<1> w $variablename Enter c to continue until the watched expression changes. Once you do, you will get
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