Examples On Programing Languages

Print content of JavaScript object?

Typically if we just use alert(object); it will show as [object Object]. How to print all the content parameters of an object in JavaScript?...

Find all paths between two graph nodes

I am working on an implemtation of Dijkstras Algorithm to retrieve the shortest path between interconnected nodes on a network of routes. I have the implentation working. It returns all the shortest paths to all the nodes when I pass the start node i...

Install an apk file from command prompt?

I want to install a file using the Windows command line. First I want to build after compiling all the .jar files to create an .apk file for an Android application without using Eclipse. Does anyone know how this can be done without the use of Eclip...

Connecting to Postgresql in a docker container from outside

I have Postgresql on a server in a docker container. How can I connect to it from the outside, that is, from my local computer? What setting should I apply to allow that?...

Exception: Can't bind to 'ngFor' since it isn't a known native property

What am I doing wrong? import {bootstrap, Component} from 'angular2/angular2' @Component({ selector: 'conf-talks', template: `<div *ngFor="talk of talks"> {{talk.title}} by {{talk.speaker}} <p>{{talk.description}} </...

Change column type in pandas

I want to convert a table, represented as a list of lists, into a Pandas DataFrame. As an extremely simplified example: a = [['a', '1.2', '4.2'], ['b', '70', '0.03'], ['x', '5', '0']] df = pd.DataFrame(a) What is the best way to convert the column...

Change Project Namespace in Visual Studio

How can I change the project namespace in Visual Studio? The namespace is currently WindowsFormsApplication16, and I want the namespace to be MyName....

Unable to connect to SQL Server instance remotely

I’m trying to access the SQL Server instance on my VPS from SQL Server Management Studio on my local machine. It’s not working (the error I’m getting is: A network-related or instance-specific error occurred while establishing a connectio...

Nested ifelse statement

I'm still learning how to translate a SAS code into R and I get warnings. I need to understand where I'm making mistakes. What I want to do is create a variable which summarizes and differentiates 3 status of a population: mainland, overseas, foreign...

How to send a stacktrace to log4j?

Say you catch an exception and get the following on the standard output (like, say, the console) if you do a e.printStackTrace() : java.io.FileNotFoundException: so.txt at java.io.FileInputStream.<init>(FileInputStream.java) at...

Best way to concatenate List of String objects?

What is the best way to concatenate a list of String objects? I am thinking of doing this way: List<String> sList = new ArrayList<String>(); // add elements if (sList != null) { String listString = sList.toString(); listString ...

MySQL: Insert datetime into other datetime field

I have a table with a DATETIME column. I would like to SELECT this datetime value and INSERT it into another column. I did this (note: '2011-12-18 13:17:17' is the value the former SELECT gave me from the DATETIME field): UPDATE products SET former...

How to send FormData objects with Ajax-requests in jQuery?

The XMLHttpRequest Level 2 standard (still a working draft) defines the FormData interface. This interface enables appending File objects to XHR-requests (Ajax-requests). Btw, this is a new feature - in the past, the "hidden-iframe-trick" was used (...

Angular 4 setting selected option in Dropdown

several questions about this and diffrent answeres. But none of them realy answeres the question. So again: Setting default of a Dropdown select by value isnt working in my case. why? This is from the dynamic Form tutorial of Angular 4: <select ...

POST data in JSON format

I have some data that I need to convert to JSON format and then POST it with a JavaScript function. <body onload="javascript:document.myform.submit()"> <form action="https://www.test.net/Services/RegistrationService.svc/InviteNewContact" me...

How to make external HTTP requests with Node.js

The question is fairly simple. I want to use a Node.js server as a proxy to log, authenticate, and forward HTTP queries to a backend HTTP server (PUT, GET, and DELETE requests). What library should I use for that purpose? I'm afraid I can't find one...

Change URL without refresh the page

I would like to replace an url without page refresh. I need to change: https://example.com/en/step1 to https://example.com/en/step2 How to do that ?...

Inline list initialization in VB.NET

Possible Duplicate: Collection initialization syntax in Visual Basic 2008? How is the following C# code translated to VB.NET? var theVar = new List<string>{"one", "two", "three"}; ...

Programmatically open new pages on Tabs

I'm trying to "force" Safari or IE7 to open a new page using a new tab. Programmatically I mean something like: window.open('page.html','newtaborsomething'); ...

jQuery get the location of an element relative to window

Given an HTML DOM ID, how to get an element's position relative to the window in JavaScript/JQuery? This is not the same as relative to the document nor offset parent since the element may be inside an iframe or some other elements. I need to get t...

Get the device width in javascript

Is there a way to get the users device width, as opposed to viewport width, using javascript? CSS media queries offer this, as I can say @media screen and (max-width:640px) { /* ... */ } and @media screen and (max-device-width:960px) { ...

What exactly do "u" and "r" string flags do, and what are raw string literals?

While asking this question, I realized I didn't know much about raw strings. For somebody claiming to be a Django trainer, this sucks. I know what an encoding is, and I know what u'' alone does since I get what is Unicode. But what does r'' do exa...

SQL query to select dates between two dates

I have a start_date and end_date. I want to get the list of dates in between these two dates. Can anyone help me pointing the mistake in my query. select Date,TotalAllowance from Calculation where EmployeeId=1 and Date between 2011/02/25 and 201...

JWT (JSON Web Token) library for Java

I am working on a web application developed using Java and AngularJS and chose to implement token authentication and authorization. For the exercise purpose, I've come to the point where I send the credentials to the server, generate a random token s...

Find if current time falls in a time range

Using .NET 3.5 I want to determine if the current time falls in a time range. So far I have the currentime: DateTime currentTime = new DateTime(); currentTime.TimeOfDay; I'm blanking out on how to get the time range converted and compared. Would...

How to find the mime type of a file in python?

Let's say you want to save a bunch of files somewhere, for instance in BLOBs. Let's say you want to dish these files out via a web page and have the client automatically open the correct application/viewer. Assumption: The browser figures out which ...

How do I view an older version of an SVN file?

I have an SVN file which is now missing some logic and so I need to go back about 40 revisions to the time when it had the logic I need. Other than trying to view a diff of the file in the command line (very hard to read), is there any way I could ge...

Live Video Streaming with PHP

I have a PHP/AJAX/MYSQL chat application. I want to add video chatting to my application. How can I create live video streaming to be used for live video conferences/chatting in a PHP application. What are the key-terms I need to know if I wanted to ...

Mysql service is missing

I have installed Mysql server locally and everything was working Ok but today when I tried to get a connection to the local db, I got an error. After checking services showed that the MySql service is missing... What can the problem be? Thanks in a...

TypeScript: casting HTMLElement

Does anyone know how to cast in TypeScript? I'm trying to do this: var script:HTMLScriptElement = document.getElementsByName("script")[0]; alert(script.type); but it's giving me an error: Cannot convert 'Node' to 'HTMLScriptElement': Type 'Node'...

What does `unsigned` in MySQL mean and when to use it?

What does "unsigned" mean in MySQL and when should I use it?...

ActionLink htmlAttributes

WORKS <a href="@Url.Action("edit", "markets", new { id = 1 })" data-rel="dialog" data-transition="pop" data-icon="gear" class="ui-btn-right">Edit</a> DOES NOT WORK - WHY? @Html.ActionLink("Edit", "edit", "markets", new { ...

How to Change Font Size in drawString Java

How to make the font size bigger in g.drawString("Hello World",10,10); ?...

Where to find "Microsoft.VisualStudio.TestTools.UnitTesting" missing dll?

I am getting following error in my C# visual studio project: The type or namespace name 'VisualStudio' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) I also tried to find the microsoft.dll file but couldn't...

Waiting until the task finishes

How could I make my code wait until the task in DispatchQueue finishes? Does it need any CompletionHandler or something? func myFunction() { var a: Int? DispatchQueue.main.async { var b: Int = 3 a = b } // wait unti...

Vue.JS: How to call function after page loaded?

I have got next Vue component. Login as calling Login function. checkAuth -- is calling checking Authorization status between page refresh. But how I can call checkAuth without pushing on button? var GuestMenu = Vue.extend({ props: ['username', '...

Removing duplicate objects with Underscore for Javascript

I have this kind of array: var foo = [ { "a" : "1" }, { "b" : "2" }, { "a" : "1" } ]; I'd like to filter it to have: var bar = [ { "a" : "1" }, { "b" : "2" }]; I tried using _.uniq, but I guess because { "a" : "1" } is not equal to itself, it d...

Is there any way to call a function periodically in JavaScript?

Is there any way to call a function periodically in JavaScript?...

Is there a code obfuscator for PHP?

Has anybody used a good obfuscator for PHP? I've tried some but they don't work for very big projects. They can't handle variables that are included in one file and used in another, for instance. Or do you have any other tricks for stopping the spre...

Escape dot in a regex range

For some reason those two regex act the same way: "43\\gf..--.65".replace(/[^\d.-]/g, "");? // 43..--.65 "43\\gf..--.65".replace(/[^\d\.-]/g, "");? // 43..--.65 Demo In the first regex I don't escape the dot(.) while in the second regex I do(\....

How to check that a JCheckBox is checked?

How can I check if a JCheckBox is checked?...

How to check for a JSON response using RSpec?

I have the following code in my controller: format.json { render :json => { :flashcard => @flashcard, :lesson => @lesson, :success => true } In my RSpec controller test I want to verify that a certain ...

How to reset par(mfrow) in R

I set par(mfrow =c(1,2)) and now everytime I plot it shows splits it into 2 plots. How can I reset this to only show one plot. Thanks so much....

Load arrayList data into JTable

I'm trying to set items from a method called FootballClub and so far it's fine. but then I created an arrayList from it and I somehow can't find a way to store this information into a JTable. The problem is that i cant find a way to set a fixed numbe...

SeekBar and media player in android

I have a simple player and recorder. Everything works great but have a one problem. I want to add seek bar to see progress in playing record and use this seek bar to set place from player should play. I have onProgress but with no effect. This is co...

How to clear all input fields in a specific div with jQuery?

I am trying to use jQuery to do a simple thing: clear the input fields of a group of input field within a div whenever the form loads, or if the user changes a picklist; but I'm having a devil of a time getting the selector to work. First, here's m...

What is the equivalent of 'describe table' in SQL Server?

I have a SQL Server database and I want to know what columns and types it has. I'd prefer to do this through a query rather than using a GUI like Enterprise Manager. Is there a way to do this?...

How do I convert a IPython Notebook into a Python file via commandline?

I'm looking at using the *.ipynb files as the source of truth and programmatically 'compiling' them into .py files for scheduled jobs/tasks. The only way I understand to do this is via the GUI. Is there a way to do it via command line?...

What’s the difference between Response.Write() andResponse.Output.Write()?

Possible Duplicate: What’s the difference between Response.Write() and Response.Output.Write()? How is it different from response.write() and response.output.write()? Please explain....

How to change text transparency in HTML/CSS?

I'm very new to HTML/CSS and I'm trying to display some text as like 50% transparent. So far I have the HTML to display the text with full opacity <html><font color=\"black\" face=\"arial\" size=\"4\">THIS IS MY TEXT</font></ht...

List to array conversion to use ravel() function

I have a list in python and I want to convert it to an array to be able to use ravel() function....

Android failed to load JS bundle

I'm trying to run AwesomeProject on my Nexus5 (android 5.1.1). I'm able to build the project and install it on the device. But when I run it, I got a red screen saying Unable to download JS bundle. Did you forget to start the development server or c...

git diff between two different files

In HEAD (the latest commit), I have a file named foo. In my current working tree, I renamed it to bar, and also edited it. I want to git diff foo in HEAD, and bar in my current working tree....

Get encoding of a file in Windows

This isn't really a programming question, is there a command line or Windows tool (Windows 7) to get the current encoding of a text file? Sure I can write a little C# app but I wanted to know if there is something already built in?...

How do I revert a Git repository to a previous commit?

How do I revert from my current state to a snapshot made on a certain commit? If I do git log, then I get the following output: $ git log commit a867b4af366350be2e7c21b8de9cc6504678a61b` Author: Me <[email protected]> Date: Thu Nov 4 18:59:41 2010 ...

How can I make my website's background transparent without making the content (images & text) transparent too?

I'm doing a website for a school project, and I'm currently having a small problem... I can't make the body's background transparent without it also affecting the content in it. Here's my HTML code: <html> <head> <meta http-equiv...

jQuery.click() vs onClick

I have a huge jQuery application, and I'm using the below two methods for click events. First method HTML <div id="myDiv">Some Content</div> jQuery $('#myDiv').click(function(){ //Some code }); Second method HTML <div id=...

AmazonS3 putObject with InputStream length example

I am uploading a file to S3 using Java - this is what I got so far: AmazonS3 s3 = new AmazonS3Client(new BasicAWSCredentials("XX","YY")); List<Bucket> buckets = s3.listBuckets(); s3.putObject(new PutObjectRequest(buckets.get(0).getName(), fi...

ASP.Net which user account running Web Service on IIS 7?

I want to know which account running my Web Service/Application so that I can assign the read/write access to that account. I have researched and see most of the sources mentions about ASPNET account, but on my 2008 server, there is not any acount na...

Use dynamic variable names in JavaScript

In PHP you can do amazing/horrendous things like this: $a = 1; $b = 2; $c = 3; $name = 'a'; echo $$name; // prints 1 Is there any way of doing something like this with Javascript? E.g. if I have a var name = 'the name of the variable'; can I get ...

Disable/enable an input with jQuery?

$input.disabled = true; or $input.disabled = "disabled"; Which is the standard way? And, conversely, how do you enable a disabled input?...

How can I count the rows with data in an Excel sheet?

I am trying to count the number of rows in a spreadsheet which contain at least one non-blank value over a few columns: i.e. row 1 has a text value in column A row 2 has a text value in column B row 3 has a text value in column C row 4 has no values...

Strip out HTML and Special Characters

I'd like to use any php function or whatever so that i can remove any HTML code and special characters and gives me only alpha-numeric output $des = "Hello world)<b> (*&^%$#@! it's me: and; love you.<p>"; I want the output ...

Access Form - Syntax error (missing operator) in query expression

I am receiving a syntax error in a form that I have created over a query. I created the form to restrict access to changing records. While trying to set filters on the form, I receive syntax errors for all attributes I try to filter on. I believe ...

Oracle "ORA-01008: not all variables bound" Error w/ Parameters

This is the first time I've dealt with Oracle, and I'm having a hard time understanding why I'm receiving this error. I'm using Oracle's ODT.NET w/ C# with the following code in a query's where clause: WHERE table.Variable1 = :VarA AND (:VarB IS ...

What in layman's terms is a Recursive Function using PHP

Can anyone please explain a recursive function to me in PHP (without using Fibonacci) in layman language and using examples? i was looking at an example but the Fibonacci totally lost me! Thank you in advance ;-) Also how often do you use them in we...

Angularjs - simple form submit

I am going through learning curve with AngularJs and I am finding that there are virtually no examples that serve real world use. I am trying to get a clear understanding of how to submit a form with the most standard components and pass it on to a ...

How does MySQL process ORDER BY and LIMIT in a query?

I have a query that looks like this: SELECT article FROM table1 ORDER BY publish_date LIMIT 20 How does ORDER BY work? Will it order all records, then get the first 20, or will it get 20 records and order them by the publish_date field? If it's th...

mysql - move rows from one table to another

If i have two tables that are identical in structure, how can i move a set of rows from 1 table to the other? The set of rows will be determined from a select query. for example: customer table person_id | person_name | person_email 123 t...

Grant all on a specific schema in the db to a group role in PostgreSQL

Using PostgreSQL 9.0, I have a group role called "staff" and would like to grant all (or certain) privileges to this role on tables in a particular schema. None of the following work GRANT ALL ON SCHEMA foo TO staff; GRANT ALL ON DATABASE mydb TO s...

How do I run a Java program from the command line on Windows?

I'm trying to execute a Java program from the command line in Windows. Here is my code: import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.Outp...

How can you use optional parameters in C#?

Note: This question was asked at a time when C# did not yet support optional parameters (i.e. before C# 4). We're building a web API that's programmatically generated from a C# class. The class has method GetFooBar(int a, int b) and the API has a me...

What is future in Python used for and how/when to use it, and how it works

__future__ frequently appears in Python modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc. Can anyone explain with examples? A few answers regarding the basic usage of __futur...

How do function pointers in C work?

I had some experience lately with function pointers in C. So going on with the tradition of answering your own questions, I decided to make a small summary of the very basics, for those who need a quick dive-in to the subject....

In log4j, does checking isDebugEnabled before logging improve performance?

I am using Log4J in my application for logging. Previously I was using debug call like: Option 1: logger.debug("some debug text"); but some links suggest that it is better to check isDebugEnabled() first, like: Option 2: boolean debugEnabled =...

How to find path of active app.config file?

I'm trying to finish this exception handler: if (ConfigurationManager.ConnectionStrings["ConnectionString"]==null) { string pathOfActiveConfigFile = ...? throw new ConfigurationErrorsException( "You either forgot to set the connection...

How to change background color of cell in table using java script

I need to change background color of single cell in table using java script. During document i need style of all cell should be same ( so used style sheet to add this. ) , but on button click i need to change color of first cell. following is the ...

Make hibernate ignore class variables that are not mapped

I thought hibernate takes into consideration only class variables that are annotated with @Column. But strangely today when I added a variable (that is not mapped to any column, just a variable i need in the class), it is trying to include that vari...

How to check if object property exists with a variable holding the property name?

I am checking for the existence of an object property with a variable holding the property name in question. var myObj; myObj.prop = "exists"; var myProp = "p"+"r"+"o"+"p"; if(myObj.myProp){ alert("yes, i have that property"); }; This is und...

How to run java application by .bat file

I need to run my Java Application through .bat file. Can anybody help please....

JavaScript Regular Expression Email Validation

This code is always alerting out "null", which means that the string does not match the expression. var pattern = "^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$"; function isEmailAddress(str) { str = "[email protected]"; alert(str.match(patte...

Git - deleted some files locally, how do I get them from a remote repository

I've deleted some files on my PC, how do I download them again? Pull says: "Already up-to-date"....

load external URL into modal jquery ui dialog

why doesn't this display ibm.com into a 400x500px modal? The section appears to be correct, but it doesn't cause the popup modal to appear. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.d...

Google Chrome: This setting is enforced by your administrator

I recently updated my Chrome browser and noticed something very weird. Many fields in the Settings have been disabled. "This setting is enforced by your administrator" appears next to many fields including my saved passwords section (which I need to ...

How do I list / export private keys from a keystore?

How do I list and export a private key from a keystore?...

How do I set hostname in docker-compose?

In my docker-compose.yml file, I have the following. However the container does not pick up the hostname value. Any ideas? dns: image: phensley/docker-dns hostname: affy domainname: affy.com volumes: - /var/run/docker.sock:/docker.sock ...

Get first day of week in PHP?

Given a date MM-dd-yyyy format, can someone help me get the first day of the week?...

How to prevent a browser from storing passwords

I need to stop browsers from storing the username & password values, because I'm working on a web application which contains more secure data. My client asked me to do this. I tried the autocomplete="off" attribute in the HTML form and password ...

How do I call paint event?

My program draws text on its panel,but if I'd like to remove the text I have to repaint. How do I call(raise) the paint event by hand?...

What's the difference between tilde(~) and caret(^) in package.json?

After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix. Why are these changes made in npm? What is the difference bet...

How to select into a variable in PL/SQL when the result might be null?

Is there a way in to just run a query once to select into a variable, considering that the query might return nothing, then in that case the variable should be null. Currently, I can't do a select into a variable directly, since if the query returns...

How to recover corrupted Eclipse workspace?

I just managed to corrupt contents of my Eclipse .metadata directory. Starting up with eclipse -clean did not work out. Deleting .metadata and then importing all projects, plugins and setting does not sound too interesting. I ended up moving .metadat...

moment.js - UTC gives wrong date

Why does moment.js UTC always show the wrong date. For example from chrome's developer console: moment(('07-18-2013')).utc().format("YYYY-MM-DD").toString() // or moment.utc(new Date('07-18-2013')).format("YYYY-MM-DD").toString() Both of them will...

Is there a way to make mv create the directory to be moved to if it doesn't exist?

So, if I'm in my home directory and I want to move foo.c to ~/bar/baz/foo.c , but those directories don't exist, is there some way to have those directories automatically created, so that you would only have to type mv foo.c ~/bar/baz/ and everyt...

Can you find all classes in a package using reflection?

Is it possible to find all classes or interfaces in a given package? (Quickly looking at e.g. Package, it would seem like no.)...

Resizing Images in VB.NET

I'd like to make a simple VB utility to resize images using vb.net. I am having trouble figuring out what vb class to use to actually manipulate the images. The Image class and the Bitmap class don't work. Any ideas, hints, tips, tutorial links are ...

Does functional programming replace GoF design patterns?

Since I started learning F# and OCaml last year, I've read a huge number of articles which insist that design patterns (especially in Java) are workarounds for the missing features in imperative languages. One article I found makes a fairly strong cl...

How to find EOF through fscanf?

I am reading matrix through file with the help of fscanf(). How can i find EOF? Even if i try to find EOF after every string caught in arr[] then also i am not able to find it. with the help of count i am reading the input file -12 23 3 1 2 4 in...

How to set the color of "placeholder" text?

Is that possible to set the color of placeholder text ? <textarea placeholder="Write your message here..."></textarea> ...

How to change the color of the axis, ticks and labels for a plot in matplotlib

I'd like to Change the color of the axis, as well as ticks and value-labels for a plot I did using matplotlib and PyQt. Any ideas?...

Python how to write to a binary file?

I have a list of bytes as integers, which is something like [120, 3, 255, 0, 100] How can I write this list to a file as binary? Would this work? newFileBytes = [123, 3, 255, 0, 100] # make file newFile = open("filename.txt", "wb") # write to fi...

Change the default editor for files opened in the terminal? (e.g. set it to TextEdit/Coda/Textmate)

Is there a way to make files opened for editing in the terminal open in Textedit instead? For example, where a command might open a file for editing (like git commit), instead of opening that file in vim or emacs, it would open in Textedit (or perh...

Git commit -a "untracked files"?

When I do a git commit -a, I am seeing the following: # Please enter the commit message for your changes. Lines starting # with '#' will be ignored, and an empty message aborts the commit. # On branch better_tag_show # Changes to be committ...

How to change working directory in Jupyter Notebook?

I couldn't find a place for me to change the working directory in Jupyter Notebook, so I couldn't use the pd.read_csv method to read in a specific csv document. Is there any way to make it? FYI, I'm using Python3.5.1 currently. Thanks!...

CMake link to external library

How to get CMake to link an executable to an external shared library that is not build within the same CMake project? Just doing target_link_libraries(GLBall ${CMAKE_BINARY_DIR}/res/mylib.so) gives the error make[2]: *** No rule to make target `res...

C# looping through an array

I am looping through an array of strings, such as (1/12/1992 apple truck 12/10/10 orange bicycle). The array's length will always be divisible by 3. I need to loop through the array and grab the first 3 items (I'm going to insert them into a DB) and ...

Count records for every month in a year

I have a table with total no of 1000 records in it.It has the following structure: EMP_ID EMP_NAME PHONE_NO ARR_DATE 1 A 545454 2012/03/12 I want to calculate no of records for every month in year-2012 Is there any way that shoul...

Converting pixels to dp

I have created my application with the height and width given in pixels for a Pantech device whose resolution is 480x800. I need to convert height and width for a G1 device. I thought converting it into dp will solve the problem and provide the same...

Replace String in all files in Eclipse

How can I search and replace a String in all files of my current project? Let's say I have the string "/sites/default/" now I want it to be "/public/sites/default/", but there are almost 1000 files....

Equal sized table cells to fill the entire width of the containing table

Is there a way using HTML/CSS (with relative sizing) to make a row of cells stretch the entire width of the table within which it is contained? The cells should be equal widths and the outer table size is also dynamic with <table width="100%">...

Sort a List of Object in VB.NET

I have a list of passengers(object) where it has a differents properties.. passenger.name passenger.age passenger.surname And I want to sort this list by age criterion, how can i do this? I know in a list of integer/string List.Sort() works, but ...

Regular expression to match any character being repeated more than 10 times

I'm looking for a simple regular expression to match the same character being repeated more than 10 or so times. So for example, if I have a document littered with horizontal lines: ================================================= It will match t...

Android Volley - BasicNetwork.performRequest: Unexpected response code 400

Problem statement: I am trying to access an REST API that will return a JSON object for various HTTP status codes (400, 403, 200 etc) using Volley. For any HTTP status other than 200, it seems the 'Unexpected response code 400' is a problem. Does a...

Insert image after each list item

What would be the best way to insert a small image after each list element? I tried it with a pseudo class but something is not right... ul li a:after { display: block; width: 3px; height: 5px; background: url ('../images/small_triangle.png'...

pip install returning invalid syntax

I've just installed python 3.6 which comes with pip However, in Windows command prompt, when I do: 'pip install bs4' it returns 'SyntaxError: invalid syntax' under the install word. Typing 'python' returns the version, which means it is installed c...

Ruby: character to ascii from a string

this wiki page gave a general idea of how to convert a single char to ascii http://en.wikibooks.org/wiki/Ruby_Programming/ASCII But say if I have a string and I wanted to get each character's ascii from it, what do i need to do? "string".each_byte ...

Remove all occurrences of a value from a list?

In Python remove() will remove the first occurrence of value in a list. How to remove all occurrences of a value from a list? This is what I have in mind: >>> remove_values_from_list([1, 2, 3, 4, 2, 2, 3], 2) [1, 3, 4, 3] ...

Select All checkboxes using jQuery

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How do I compare two DateTime objects in PHP 5.2.8?

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public class ConsolidatedChild { public string School { get; set; } public string Friend { get; set; } public string FavoriteColor { get; set; } public List<Child> Children { get; set; } } public class Child { public string...

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At start up of my application I am trying to see if the user has a specific version of a software installed, specifically the MySQL connector, all using c#. In the registry, the MySQL contains a version entry. So what I am trying to accomplish is thi...

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Warning: mysql_connect(): Access denied for user 'root'@'localhost' (using password: YES) in C:\xampp\htdocs\Login\sessionHandler.php on line 35 So this is what's on the line 35. //to make a connection with database $conn = mysql_connect("l...

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I know how to provide a username and password to an HTTPS request like this: git clone https://username:password@remote But I'd like to know how to provide a username and password to the remote like this: git clone [email protected] I've tried lik...

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With respect to using recursion over non-recursive methods in sorting algorithms or, for that matter, any algorithm what are its pros and cons?...

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I don't understand what exactly Camel does. If you could give in 101 words an introduction to Camel: What exactly is it? How does it interact with an application written in Java? Is it something that goes together with the server? Is it an inde...

C# - How to get Program Files (x86) on Windows 64 bit

I'm using: FileInfo( System.Environment.GetFolderPath( System.Environment.SpecialFolder.ProgramFiles) + @"\MyInstalledApp" In order to determine if a program is detected on a users machine (it's not ideal, but the program I'm look...

Android: show/hide a view using an animation

I've been looking through many google results / questions on here to determine how to show/hide a view via a vertical animation, but I can't seem to find one that's exactly right or not too vague. I have a layout (undo bar) that's below another layo...

How to check if a string is a number?

I want to check if a string is a number with this code. I must check that all the chars in the string are integer, but the while returns always isDigit = 1. I don't know why that if doesn't work. char tmp[16]; scanf("%s", tmp); int isDigit = 0; int...

How to call on a function found on another file?

I'm recently starting to pick up C++ and the SFML library, and I was wondering if I defined a Sprite on a file appropriately called "player.cpp" how would I call it on my main loop located at "main.cpp"? Here is my code (Be aware that this is SFML 2...

How to condense if/else into one line in Python?

Possible Duplicate: Python Ternary Operator Putting a simple if-then statement on one line Is there a way to compress an if/else statement to one line in Python? I oftentimes see all sorts of shortcuts and suspect it can apply here too....

How to convert a currency string to a double with jQuery or Javascript?

I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it. "$1,100.00" ? 1100.00 This needs to occur all client side. I have no choice but to leave the currency st...

What programming language does facebook use?

I don't know much about programming languages, but am interested in a career with facebook, so I was wondering if someone could tell me what programming language facebook uses. Also, do any other social networking sites use the same language?...

T-SQL CASE Clause: How to specify WHEN NULL

I wrote a T-SQL Statement similar like this (the original one looks different but I want to give an easy example here): SELECT first_name + CASE last_name WHEN null THEN 'Max' ELSE 'Peter' END AS Name FROM dbo.person This Statement does not h...

Scala: join an iterable of strings

How do I "join" an iterable of strings by another string in Scala? val thestrings = Array("a","b","c") val joined = ??? println(joined) I want this code to output a,b,c (join the elements by ",")....

AttributeError: Can only use .dt accessor with datetimelike values

Hi I am using pandas to convert a column to month. When I read my data they are objects: Date object dtype: object So I am first making them to date time and then try to make them as months: import pandas as pd file = '/pathtocsv.csv' ...

Populate XDocument from String

I'm working on a little something and I am trying to figure out whether I can load an XDocument from a string. XDocument.Load() seems to take the string passed to it as a path to a physical XML file. I want to try and bypass the step of first having...

NameError: name 'python' is not defined

Am encountering this error in Windows Command line,done a wide search but could not get a perfect answer.Please find the error below and help in solving. python Traceback (most recent call last): File "<stdin>", line 1, in <module> Nam...

How do I rewrite URLs in a proxy response in NGINX

I'm used to using Apache with mod_proxy_html, and am trying to achieve something similar with NGINX. The specific use case is that I have an admin UI running in Tomcat on port 8080 on a server at the root context: http://localhost:8080/ I need to...

How to calculate age (in years) based on Date of Birth and getDate()

I have a table listing people along with their date of birth (currently a nvarchar(25)) How can I convert that to a date, and then calculate their age in years? My data looks as follows ID Name DOB 1 John 1992-01-09 00:00:00 2 Sally...

Where can I read the Console output in Visual Studio 2015

I am new to C# and downloaded the free version of Microsoft Visual Studio 2015. To write a first program, I created a Windows Forms Application. Now I use Console.Out.WriteLine() to print some test data. But where can I read the console?...

How to set "style=display:none;" using jQuery's attr method?

Following is the form with id msform that I want to apply style="display:none" attribute to. <form id="msform" style="display:none;"> </form> Also the check should be performed before adding the "style=display:none;" property. That is ...

Call PowerShell script PS1 from another PS1 script inside Powershell ISE

I want call execution for a myScript1.ps1 script inside a second myScript2.ps1 script inside Powershell ISE. The following code inside MyScript2.ps1, works fine from Powershell Administration, but doesn't work inside PowerShell ISE: #Call myScript1...

WAMP shows error 'MSVCR100.dll' is missing when install

When I tried to install WAMP, that popped up the following alert, I clicked OK, it continued to install WAMP. When I start, the WAMP logo is always 'yellow'. It isn't turning 'green', meaning there's something wrong. What exactly is the MSVCR100.dl...

jQuery: How to get the event object in an event handler function without passing it as an argument?

I have an onclick attribute on my link: <a href="#" onclick="myFunc(1,2,3)">click</a> That points to this event handler in JavaScript: function myFunc(p1,p2,p3) { //need to refer to the current event object: alert(evt.type); ...

Printing to the console in Google Apps Script?

I am very new to programming (have taken some of the JS courses on Codecademy). I am trying to create a simple script to determine, if given a spreadsheet with results from a poker game, who should pay whom. I opened up Google Apps Script, and wrote ...

How to sort Map values by key in Java?

I have a Map that has strings for both keys and values. Data is like following: "question1", "1" "question9", "1" "question2", "4" "question5", "2" I want to sort the map based on its keys. So, in the end, I will have question1, que...

How to add icon to mat-icon-button

I am using Angular with Material <button mat-icon-button><mat-icon svgIcon="thumb-up"></mat-icon>Start Recording</button> I am trying to add an icon to button, but I can't figure out how to do it, and can't find documentat...

Comparing floating point number to zero

The C++ FAQ lite "[29.17] Why doesn't my floating-point comparison work?" recommends this equality test: #include <cmath> /* for std::abs(double) */ inline bool isEqual(double x, double y) { const double epsilon = /* some small nu...

Casting objects in Java

I'm confused about what it means to cast objects in Java. Say you have... Superclass variable = new Subclass object(); (Superclass variable).method(); What is happening here? Does the variable type change, or is it the object within the variable ...

How to convert dd/mm/yyyy string into JavaScript Date object?

How to convert a date in format 23/10/2015 into a JavaScript Date format: Fri Oct 23 2015 15:24:53 GMT+0530 (India Standard Time) ...

Enable SQL Server Broker taking too long

I have a Microsoft SQL server 2005 and I tried to enable Broker for my database with those T-SQL: SELECT name, is_broker_enabled FROM sys.databases -- checking its status 0 in my case ALTER DATABASE myDatabase SET ENABLE_BROKER The Alter Datab...

html select option separator

How do you make a separator in a select tag? New Window New Tab ----------- Save Page ------------ Exit ...

MySQL - Replace Character in Columns

Being a self-taught newbie, I created a large problem for myself. Before inserting data in to my database, I've been converting apostrophes (') in a string, to double quotes (""), instead of the required back-slash and apostrophe (\'), which MySQL ac...

Pandas DataFrame to List of Dictionaries

I have the following DataFrame: customer item1 item2 item3 1 apple milk tomato 2 water orange potato 3 juice mango chips which I want to translate it to list of dictionaries per row...

Qt: resizing a QLabel containing a QPixmap while keeping its aspect ratio

I use a QLabel to display the content of a bigger, dynamically changing QPixmap to the user. It would be nice to make this label smaller/larger depending on the space available. The screen size is not always as big as the QPixmap. How can I modify t...

How do I get the current username in .NET using C#?

How do I get the current username in .NET using C#?...

Cannot resolve symbol AppCompatActivity - Support v7 libraries aren't recognized?

I'm trying to figure out why the heck my Android studio isn't recognizing the AppCompat v7 library correctly. The import statement below shows up as gray and says there's no package for support.v7.app. Below is my activity file: import android.suppo...

Comprehensive beginner's virtualenv tutorial?

I've been hearing the buzz about virtualenv lately, and I'm interested. But all I've heard is a smattering of praise, and don't have a clear understanding of what it is or how to use it. I'm looking for (ideally) a follow-along tutorial that can tak...