[Solved] What motivates the concept of “pointers” in C, when the concept of numbers only would suffice?

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[ad_1] TL;DR It is completely possible to have a language without pointers. Actually, it is possible to write a C program where you store addresses in regular integer variables and then cast them to pointers. Calling pointers, and also the general concept of types, syntactic sugar is to stretch it a bit, but it’s not … Read more

[Solved] An unexpected sorting of const map

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[ad_1] As the standard says: Internally, the elements in a map are always sorted by its key following a specific strict weak ordering criterion indicated by its internal comparison object (of type Compare). So, elements are sorted automatically as you insert them to the map. [ad_2] solved An unexpected sorting of const map

[Solved] How do I change where an image is when it is following my pointer?

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[ad_1] Instead of hard-coding image width, which is a bad practice and also hard to maintain, you could use CSS transform: translateX(-50%) attribute which does the work even if you change the image altogether in the future. $(document).mousemove(function(e){ $(“#image”).css({left:(e.pageX)})}); #image{ position:absolute; transform: translateX(-50%) } <script src=”https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> <img id=”image” title=”foo” src=”https://cdn3.imggmi.com/uploads/2019/7/24/5274c06660578c6f2b538d23ff87b7e9-full.png”/> 0 [ad_2] solved How do … Read more

[Solved] java.lang.StackOverflowError when trying to add the same instance of list multiple times

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[ad_1] All your Parent instances have the same list of children, since you construct a single ArrayList and use it as the children of all three Person. So you have a recursive data structure. Create a different list for each person. [ad_2] solved java.lang.StackOverflowError when trying to add the same instance of list multiple times

[Solved] Google Maps Api v2 Android Error

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[ad_1] Because version 2 of the Google Maps Android API requires OpenGL ES version 2, you must add a element as a child of the manifest element in AndroidManifest.xml: <uses-feature android:glEsVersion=”0x00020000″ android:required=”true”/> This notifies external services of the requirement. In particular, it has the effect of preventing Google Play Store from displaying your app on … Read more

[Solved] ASP NET Core (MVC) problem with passing parameters from the view to the controller

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[ad_1] Because the parameter names you accept are answer1, answer2, you should have a matching name in your view to make it possible to bind successfully. You can modify your front-end code as follows(DropDownListForto DropDownList): @model CommonEntity @using (Html.BeginForm(“Find”, “Hello”)) { @Html.DropDownList(“answer1”, new SelectList(ViewBag.Location, “Title”, “Title”)) @Html.DropDownList(“answer2”, new SelectList(ViewBag.JobTitle, “Title”, “Title”)) <button type=”submit”>Find</button> } Your … Read more

[Solved] Can you draw a google static map to a canvas after you download it?

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[ad_1] As i mentioned in comments, You could actually reuse the bitmap. You could also draw on canvas directly for date and time since the datetime bitmap will consume 160000 bytes i.e 156kb. I have not tested the code. This is just a suggestion. class TheTask extends AsyncTask<Void, Void, Bitmap> { File mediaFile = new … Read more

[Solved] Need to get input text with javascript then add it to a sentence

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[ad_1] If I understood the question correctly, you might be looking for something like this: <script type=”text/javascript”> $(function() { $(“#pTextInput”).html(“1”); $(“#quantity”).on(“change keyup”, function() { $(“#pTextInput”).html($(this).val()); }); }); </script> <label for=”quantity”>Qty: </label> <input min=”1″ type=”number” id=”quantity” name=”quantity” value=”1″ /> <input type=”submit” id=”add-to-cart” class=”btn addtocart” name=”add” value=”Add to cart” /> <div class=”how-many”>You have helped save <span id=”pTextInput”></span> … Read more