What's the difference between “.equals” and “==”? [duplicate]

What's the difference between “.equals” and “==”? [duplicate]

This question already has an answer here: What is the difference between == vs equals() in Java? 23 answers I switched lecturers today and he stated us

How to use FormData for ajax file upload

How to use FormData for ajax file upload

This is my html which I'm generating dynamically using drag and drop functionality.

EF: Include with where clause

EF: Include with where clause

As the title suggest I am looking for a way to do a where clause in combination with an include.Here is my situations:I am responsible for the support of a large application full of code smells.Changing too much code causes bugs everywhere

How to get innerHTML of DOMNode?

How to get innerHTML of DOMNode?

What function do you use to get innerHTML of a given DOMNode in the PHP DOM implementation? Can someone give reliable solution? Of course outerHTML will do too. 1:Compare this updated variant with PHP Manual User Note #89718:<?php functi

await vs Task.Wait - Deadlock?

await vs Task.Wait - Deadlock?

I don't quite understand the difference between Task.Wait and await.I have something similar to the following functions in a ASP.NET WebAPI service:public class TestController : ApiController{ public static async Task Foo() {

Does Python support short-circuiting?

Does Python support short-circuiting?

Does Python support short-circuiting in boolean expressions? 1:Yep, both and and or operators short-circuit -- see the docs. 2:Short-circuiting behavior in operator and, or:Let's first define a useful function to determine if somethin

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

How to close current tab in a browser window?

How to close current tab in a browser window?

I want to create a link on a webpage that would close current active tab in a browser without closing other tabs in the browser. When user clicks close link, an alert message should appear asking user to confirm with two buttons, "YES" and

Why does list.append evaluate to false in a boolean context?

Why does list.append evaluate to false in a boolean context?

Is there a reason being list.append evaluating to false? Or is it just the C convention of returning 0 when successful that comes into play?>>> u = []>>> not u.append(6)True 1:Most Python methods that mutate a container in-place return N

How to deal with SettingWithCopyWarning in Pandas?

How to deal with SettingWithCopyWarning in Pandas?

BackgroundI just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this:E:\FinReporter\FM_EXT.py:449: SettingWithCopyWarning: A value is trying to be set on a copy of a slice

Quickly reading very large tables as dataframes in R

Quickly reading very large tables as dataframes in R

I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my c

What is the purpose of the var keyword and when should I use it (or omit it)?

What is the purpose of the var keyword and when should I use it (or omit it)?

NOTE: This question was asked from the viewpoint of ECMAScript version 3 or 5. The answers might become outdated with the introduction of new features in the release of ECMAScript 6.What exactly is the function of the var keyword in JavaScr

How can I sort arrays and data in PHP?

How can I sort arrays and data in PHP?

Due to the enormous and ever repeating amount of "How do I sort my unique snowflake of an array?" questions, this is a reference collection of basic sorting methods in PHP. Please close any question which does not markedly differ as a dupli

Right click on JButton

Right click on JButton

I am trying to write a Minesweeper clone in Java for fun. I have a grid of JButtons whose labels I will change to represent the danger count, flags, etc. My problem is, I don't know how to get a right click on a JButton to depress the but

Python's hasattr on list values of dictionaries always returns false?

Python's hasattr on list values of dictionaries always returns false?

I have a dictionary that sometimes receives calls for non-existent keys, so I try and use hasattr and getattr to handle these cases:key_string = 'foo'print "current info:", infoprint hasattr(info, key_string)print getattr(info, key_string,

Python: Random selection per group

Python: Random selection per group

Say that I have a dataframe that looks like:Name Group_IdAAA 1ABC 1CCC 2XYZ 2DEF 3 YYH 3How could I randomly select one (or more) row for each Group_Id? Say that I want one random draw per Group_Id, I would get:Name Group_IdAAA 1XYZ

How to send post request with x-www-form-urlencoded body

How to send post request with x-www-form-urlencoded body

How in java, can I send a request with x-www-form-urlencoded header. I don't understand how to send a body with a key-value, like in the above screenshot.I have tried this code:String urlParameters = cafedra_name+ data_to_send;URL url;

DataGridView setting Row height in code and disable manual resize

DataGridView setting Row height in code and disable manual resize

In my grid I had following line of code which disabled user's manual resizing:dgvTruckAvail.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;Now I needed to set column height in code and it didn't work (see DataGridView setting row

SharedPreferences Clear/Save

SharedPreferences Clear/Save

Iam trying to make a checker and I want to save a value into SharedPreferences. But i'am not sure if it worksThis what I do to save the value is : * SharedPreferences prefs = getSharedPreferences("PREFERENCE", MODE_PRIVATE); boolean f

AngularJS directive template not updating if scope is populated via ajax

AngularJS directive template not updating if scope is populated via ajax

I tried to give this question as precise a title as I could.I'm pretty new to AngularJS but I'm stomped on this issue. I tried to make a jsfiddle to better illustrate my issue but it relies on too many separate files. And alas it is not onl

When would JavaScript == make more sense than ===?

When would JavaScript == make more sense than ===?

As Which equals operator (== vs ===) should be used in JavaScript comparisons? indicates they are basically identical except '===' also ensures type equality and hence '==' might perform type conversion. In Douglas Crockford's JavaScript: T

How do you remove the column name row from a pandas DataFrame?

How do you remove the column name row from a pandas DataFrame?

Say I import the following excel spreadsheet into a dfVal1 Val2 Val31 2 3 5 6 7 9 1 2How do I delete the column name row (in this case Val1, Val2, Val3) so that I can export a csv with no column names, just the data?I h

Must I call atomic load/store explicitly?

Must I call atomic load/store explicitly?

C++11 introduced the std::atomic template library. The standard specifies the store() and load() operations to atomically set / get a variable shared by more than one thread.My question is are assignment and access operations also atomic? N

Sequelize, convert entity to plain object

Sequelize, convert entity to plain object

I'm not very familiar with javascript, and stunning, because i can't add new property, to object, that fetched from database using ORM names Sequelize.js.To avoid this, i use this hack:db.Sensors.findAll({ where: { nodeid: node.no

How to count words within a text string?

How to count words within a text string?

On iOS, how can I count words within a specific text string? 1:A more efficient method than splitting is to check the string character by character.int word_count(NSString* s) { CFCharacterSetRef alpha = CFCharacterSetGetPredefined(kCFC