Margin on child element moves parent element

Margin on child element moves parent element

I have a div (parent) that contains another div (child). Parent is the first element in body with no particular CSS style. When I set.child{ margin-top: 10px;}The end result is that top of my child is still aligned with parent. Instead o

Way to go from recursion to iteration

Way to go from recursion to iteration

I've used recursion quite a lot during my many years of programming to solve simple problems, but I'm fully aware that sometimes you need iteration due to memory/speed problems.So, somewhere in the very far past I went to try to find if the

Turning query errors to Exceptions in MySQLi

Turning query errors to Exceptions in MySQLi

I'm trying to turn MySQLi query errors to Exceptions, but couldn't - mysqli_sql_exception is thrown only if it failed to connect the DB.I used mysqli_report(MYSQLI_REPORT_STRICT) and procedural MySQLi functions embedded to custom wrapper cl

Why doesn't the height of a container element increase if it contains floated elements?

Why doesn't the height of a container element increase if it contains floated elements?

I would like to ask how height and float work. I have an outer div and an inner div that has content in it. Its height may vary depending on the content of the inner div but it seems that my inner div will overflow its outside div. What wou

Simplest code for array intersection in javascript

Simplest code for array intersection in javascript

What's the simplest, library-free code for implementing array intersections in javascript? I want to writeintersection([1,2,3], [2,3,4,5])and get[2, 3] 1:Use a combination of Array.prototype.filter and Array.prototype.indexOf.array1.filt

Non-static variable cannot be referenced from a static context

Non-static variable cannot be referenced from a static context

I've written this test code:class MyProgram{ int count = 0; public static void main(String[] args) { System.out.println(count); }}But it gives the following error:Main.java:6: error: non-static variable count cannot be re

Can I mix MySQL APIs in PHP?

Can I mix MySQL APIs in PHP?

I have searched the net and so far what I have seen is that you can use mysql_ and mysqli_ together meaning:<?php$con=mysqli_connect("localhost", "root" ,"" ,"mysql");if( mysqli_connect_errno( $con ) ) { echo "failed to connect";}else{

Anonymous variables in Erlang

Anonymous variables in Erlang

What are the exact differences between underscore variables and a named variable that starts with underscore from the Erlang compiler point of view (apart from adding readability to the code)?For example are _ and _Var different? 1:The d

Input background colour destroys styling?

Input background colour destroys styling?

I am creating a form which is validated under jQuery Validation. I want to apply a light-red background colour to inputs which are invalid and need to be corrected.When I apply background-color: #FFCCCC; to the input, the attractive stylin

Difference between running lint via Android Studio menu and gradlew command-line

Difference between running lint via Android Studio menu and gradlew command-line

When I run the following on a command line:./gradlew -lintI get different results than if I choose the following menu option within Android Studio.Analyze->Inspect Code...Can anyone explain this? Is this normal? Should a prudent developer

How to reference a drawable from a library project into a main project's layout in android?

How to reference a drawable from a library project into a main project's layout in android?

I have a android library project and reusable drawable resources in it. Lets say package name is: com.vijay.mylib;Then i have a main project and it uses the above library project.Lets say its package name is:com.vijay.myproject.Consider tha

Jquery on image error not working on dynamic images?

Jquery on image error not working on dynamic images?

I have the following js code, $(document).on("error", "img", function () { alert('a') this.src = ResolveUrl("~/images/tree-item.png"); });This event is not triggered. I am sure there are lot of broken images

Why does MPI_Init accept pointers to argc and argv?

Why does MPI_Init accept pointers to argc and argv?

this is how we use MPI_Init functionint main(int argc, char **argv){ MPI_Init(&argc, &argv);…}why does MPI_Init use pointers to argc and argv instead of values of argv? 1:According to the answer stated here:Passing arguments via comma

Can I peek on a BufferedReader?

Can I peek on a BufferedReader?

Is there a way to check if in BufferedReader object is something to read? Something like C++ cin.peek(). Thanks. 1:You can try the "boolean ready()" method.From the Java 6 API doc: "A buffered character stream is ready if the buffer is n

getting the opposite diagonal of a numpy array

getting the opposite diagonal of a numpy array

So in numpy arrays there is the built in function for getting the diagonal indices, but I can't seem to figure out how to get the diagonal starting from the top right rather than top left. This is the normal code to get starting from the to

A .bat File, “Call” or Not to “Call”, That is the

A .bat File, “Call” or Not to “Call”, That is the

If from inside a bat file you called another batch file but still had a few remaining operations to complete, how can you make sure that the call to first bat file will after completion or error, will return to the file that called it in th

Meaning of Three dot (…) in PHP

Meaning of Three dot (…) in PHP

What is the meaning of Three dot (...) in PHP ?While I am installing Magento 2 in my Sever I got an error. Investigate the code and found that there is a Three dot (...), which is producing the error. I mentioned the code belowreturn new $t

Spring syntax for setting a Class object?

Spring syntax for setting a Class object?

Is there a way to set a property in spring to, not an instance of a class, but the class object itself? i.e.Rather than ...giving you an instance of "Foo", something like: edit:best (working) solution so far - use the normal instantiati

dependent dropdown yii2. How to do?

dependent dropdown yii2. How to do?

can I create a dependent dropdown in yii2?I have two tables: 'id','name_country"'id','name_city','country_id'and have two methods in my model:public function getCountryList(){$models = NetCountry::find()->asArray()->all();return ArrayHelper

OpenCart admin menu link url

OpenCart admin menu link url

I'm verry new to OpenCart and I'm trying to make a module for it.I want a link in the admin menu to the module I am creating thus I've edited this file:/admin/view/template/common/header.tplThe code I have added:Import / Export L

Why are self-executing anonymous functions used in Javascript Module pattern?

Why are self-executing anonymous functions used in Javascript Module pattern?

In the module pattern in JavaScript "Immediately-Invoked Function Expressions" (also known as self-executing anonymous functions) are used as self executing functions that return an object. How can a self-executing function hide private var

Ajax Control Toolkit is loading too many script resources

Ajax Control Toolkit is loading too many script resources

I created a new project. I installed Ajax Control Toolkit from NuGet. Then I created a new page aspx with following code: I was dumbfounded when I saw that ajaxtookit created 152 scriptresources files.I am worried because I know that

How to dereference a memory location from python ctypes?

How to dereference a memory location from python ctypes?

I want to replicate the following c code in python ctypes:main() { long *ptr = (long *)0x7fff96000000; printf("%lx",*ptr);}I can figure out how to call this memory location as a function pointer but not just do a normal dereference:from c

SQL Server 2005:charindex starting from the end

SQL Server 2005:charindex starting from the end

I have a string 'some.file.name',I want to grab 'some.file'.To do that,I need to find the last occurrence of '.' in a string.My solution is : declare @someStr varchar(20) declare @reversedStr varchar(20) declare @index int set @someStr = '0

Install mod_wsgi on Ubuntu with Python 3.6, Apache 2.4, and Django 1.11

Install mod_wsgi on Ubuntu with Python 3.6, Apache 2.4, and Django 1.11

How do I get mod_wsgi for Apache2 that was compiled for Python 3.6.1? (or any future Python version)I am using a Python 3.6.1 virtual environment with Django 1.11 and Everything is working according to the Apache error log except that mod_w