Examples On Programing Languages

Regex: match word that ends with "Id"

I need help putting together a regex that will match word that ends with "Id" with case sensitive match....

How to show math equations in general github's markdown(not github's blog)

After investigating, I've found mathjax can do this. But when I write some example in my markdown file, it doesn't show the correct equations: I have added this in the head of markdown file: <script type="text/javascript" src="http://cdn.mathjax...

Converting Java file:// URL to File(...) path, platform independent, including UNC paths

I am developing a platform independent application. I am receiving a file URL*. On windows these are: file:///Z:/folder%20to%20file/file.txt file://host/folder%20to%20file/file.txt (an UNC path) I am using new File(URI(urlOfDocument).getPath())wh...

Apache: Restrict access to specific source IP inside virtual host

I have several named virtual hosts on the same apache server, for one of the virtual host I need to ensure only a specific set of IP addresses are allowed to access. Please suggest the best way to do this. I have looked at mod_authz_hosts module bu...

How to tell bash that the line continues on the next line

In a bash script I got from another programmer, some lines exceeded 80 columns in length. What is the character or thing to be added to the line in order to indicate that the line continues on the next line?...

Switch statement with returns -- code correctness

Let's say I have code in C with approximately this structure: switch (something) { case 0: return "blah"; break; case 1: case 4: return "foo"; break; case 2: case 3: return "bar"; break; ...

High Quality Image Scaling Library

I want to scale an image in C# with quality level as good as Photoshop does. Is there any C# image processing library available to do this thing?...

How do I use JDK 7 on Mac OSX?

I would like to use the WatchService API as mentioned in this link: http://download.oracle.com/javase/tutorial/essential/io/notification.html After reading around, I found out that WatchService is part of the NIO class which is scheduled for JDK 7. ...

How to set the min and max height or width of a Frame?

The size of Tkinter windows can be controlled via the following methods: .minsize() .maxsize() .resizable() Are there equivalent ways to control the size of Tkinter or ttk Frames? @Bryan: I changed your frame1.pack code to the following: frame1....

CSS: 100% font size - 100% of what?

There are many articles and questions about percentage-sized vs other-sized fonts. However, I can not find out WHAT the reference of the percent-value is supposed to be. I understand this is 'the same size in all browsers'. I also read this, for inst...

Keep a line of text as a single line - wrap the whole line or none at all

I'd like to keep a line of text together such that either the whole line drops down a line or none at all Acceptable How do I wrap this line of text - asked by Peter 2 days ago Acceptable How do I wrap this line of text - asked by Peter 2 days ...

Posting JSON data via jQuery to ASP .NET MVC 4 controller action

I'm having trouble trying to pass a complex JSON object to an MVC 4 controller action. As the JSON content is variable, I don't want MVC to map individual properties/elements of the JSON to parameters in the action method's parameter list. I just w...

What regex will match every character except comma ',' or semi-colon ';'?

Is it possible to define a regex which will match every character except a certain defined character or set of characters? Basically, I wanted to split a string by either comma (,) or semi-colon (;). So I was thinking of doing it with a regex which ...

Is there a mechanism to loop x times in ES6 (ECMAScript 6) without mutable variables?

The typical way to loop x times in JavaScript is: for (var i = 0; i < x; i++) doStuff(i); But I don't want to use the ++ operator or have any mutable variables at all. So is there a way, in ES6, to loop x times another way? I love Ruby's mech...

CURL alternative in Python

I have a cURL call that I use in PHP: curl -i -H 'Accept: application/xml' -u login:key "https://app.streamsend.com/emails" I need a way to do the same thing in Python. Is there an alternative to cURL in Python. I know of urllib but I'm a Pytho...

How do you specify a byte literal in Java?

If I have a method void f(byte b); how can I call it with a numeric argument without casting? f(0); gives an error....

Android SQLite Example

I am new to Android and I have to create an application where I need to use a SQLite database. I am not so well equipped with the SQLite. Could you tell me what the purpose and use of the SQLiteOpenHelper class, and provide a simple database creatio...

Suppress output of a function

I'm looking to suppress the output of one command (in this case, the apply function). Is it possible to do this without using sink()? I've found the described solution below, but would like to do this in one line if possible. How to suppress outpu...

How to construct a std::string from a std::vector<char>?

Short of (the obvious) building a C style string first then using that to create a std::string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars?...

invalid use of non-static data member

For a code like this: class foo { protected: int a; public: class bar { public: int getA() {return a;} // ERROR }; foo() : a (p->param) }; I get this error: invalid use of non-static data member 'foo:...

C compiler for Windows?

I'm fine working on Linux using gcc as my C compiler but would like a Windows solution. Any ideas? I've looked at Dev-C++ from Bloodshed but looking for more options....

How is an HTTP POST request made in node.js?

How can I make an outbound HTTP POST request, with data, in node.js?...

Get installed applications in a system

How to get the applications installed in the system using c# code?...

Drop Down Menu/Text Field in one

I'm working on building new site, and I need a drop down menu to select the amount of something in my site. But at the same time I need this drop down list to accept text. So if the client wants to choose from the drop down list then he can, also if ...

What's the difference between nohup and ampersand

Both nohup myprocess.out & or myprocess.out & set myprocess.out to run in the background. After I shutdown the terminal, the process is still running. What's the difference between them?...

Why has it failed to load main-class manifest attribute from a JAR file?

I have created a JAR file in this way jar cf jar-file input-files. Now, I'm trying to run it. Running it does not work (jre command is not found): jre -cp app.jar MainClass This does not work either: java -jar main.jar (Failed to load Main-Clas...

How do you get assembler output from C/C++ source in gcc?

How does one do this? If I want to analyze how something is getting compiled, how would I get the emitted assembly code?...

Responding with a JSON object in Node.js (converting object/array to JSON string)

I'm a newb to back-end code and I'm trying to create a function that will respond to me a JSON string. I currently have this from an example function random(response) { console.log("Request handler 'random was called."); response.writeHead(200, ...

What's the difference between Perl's backticks, system, and exec?

Can someone please help me? In Perl, what is the difference between: exec "command"; and system("command"); and print `command`; Are there other ways to run shell commands too?...

How to display request headers with command line curl

Command line curl can display response header by using -D option, but I want to see what request header it is sending. How can I do that?...

Purpose of Activator.CreateInstance with example?

Can someone explain Activator.CreateInstance() purpose in detail?...

What is the most effective way to get the index of an iterator of an std::vector?

I'm iterating over a vector and need the index the iterator is currently pointing at. AFAIK this can be done in two ways: it - vec.begin() std::distance(vec.begin(), it) What are the pros and cons of these methods?...

better way to drop nan rows in pandas

On my own I found a way to drop nan rows from a pandas dataframe. Given a dataframe dat with column x which contains nan values,is there a more elegant way to do drop each row of dat which has a nan value in the x column? dat = dat[np.logical_not(np...

Border around specific rows in a table?

I'm trying to design some HTML/CSS that can put a border around specific rows in a table. Yes, I know I'm not really supposed to use tables for layout but I don't know enough CSS to completely replace it yet. Anyways, I have a table with multiple ro...

size of NumPy array

Is there an equivalent to the MATLAB size() command in Numpy? In MATLAB, >>> a = zeros(2,5) 0 0 0 0 0 0 0 0 0 0 >>> size(a) 2 5 In Python, >>> a = zeros((2,5)) >>> array([[ 0., 0., 0., 0., 0.], ...

CSS Animation onClick

How can I get a CSS Animation to play with a JavaScript onClick? I currently have: .classname { -webkit-animation-name: cssAnimation; -webkit-animation-duration:3s; -webkit-animation-iteration-count: 1; -webkit-animation-timing-function: eas...

Function not defined javascript

For some reason my javascript code is messed up. When run through firebug, I get the error proceedToSecond not defined, but it is defined! JavaScript: <script type = "text/javascript"> function proceedToSecond () { document.getEl...

How can I read pdf in python?

How can I read pdf in python? I know one way of converting it to text, but I want to read the content directly from pdf. Can anyone explain which module in python is best for pdf extraction...

Calculate difference in keys contained in two Python dictionaries

Suppose I have two Python dictionaries - dictA and dictB. I need to find out if there are any keys which are present in dictB but not in dictA. What is the fastest way to go about it? Should I convert the dictionary keys into a set and then go about...

CSS Outside Border

I want to be able to draw a border OUTSIDE of my Div! So if my div is say 20px by 20px, I want a 1px border outside of this (so in essence, I get a div 22x22px large). I understand that I can just make the div 22x22 to start with, but for reasons I...

How to select <td> of the <table> with javascript?

I know this is very easy question, but I couldn't find the answer anywhere. Only answers are the ones using jQuery, not pure JS. I've tried the code below and it doesn't work. I don't know why. var t = document.getElementById("table"), d = t.ge...

Setting href attribute at runtime

What is the best way to set the href attribute of the <a> tag at run time using jQuery? Also, how do you get the value of the href attribute of the <a> tag using jQuery?...

class << self idiom in Ruby

What does class << self do in Ruby?...

Best way to test if a row exists in a MySQL table

I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this: SELECT COUNT(*) AS total FROM table1 WHERE ... and check to see if the total is non-zero or is it better to do a query like this: SELECT * FROM ...

How to download an entire directory and subdirectories using wget?

I am trying to download the files for a project using wget, as the SVN server for that project isn't running anymore and I am only able to access the files through a browser. The base URLs for all the files is the same like http://abc.tamu.edu/p...

Force drop mysql bypassing foreign key constraint

I'm trying to delete all tables from a database except one, and I end up having the following error: Cannot delete or update a parent row: a foreign key constraint fails Of course I could trial and error to see what those key constraints are a...

What is a semaphore?

A semaphore is a programming concept that is frequently used to solve multi-threading problems. My question to the community: What is a semaphore and how do you use it?...

How to run (not only install) an android application using .apk file?

Is there any command on cmd.exe that would allow me to start the main activity of a particular android application using the .apk file of that application. Please note that I know this command which only installs an android application: adb install ...

Conditional formatting, entire row based

I've searched and read through answers related to conditional formatting, but I can't seem to get mine to work, so maybe I'm doing something wrong. I have a worksheet for work. It contains a list of animals in our shelter. What I'm attempting to do ...

Running shell command and capturing the output

I want to write a function that will execute a shell command and return its output as a string, no matter, is it an error or success message. I just want to get the same result that I would have gotten with the command line. What would be a code exa...

Right way to split an std::string into a vector<string>

Possible Duplicate: How to split a string? What is the right way to split a string into a vector of strings. Delimiter is space or comma....

Driver executable must be set by the webdriver.ie.driver system property

I am using Selenium for automating the tests. My application exclusively uses IE, it will not work on other Browsers. Code: import org.openqa.selenium.ie.InternetExplorerDriver; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; i...

Error:Cannot fit requested classes in a single dex file.Try supplying a main-dex list. # methods: 72477 > 65536

I want to add fused location services but it shows me some error. Help me. apply plugin: 'com.android.application' android { compileSdkVersion 26 buildToolsVersion "27.0.1" defaultConfig { applicationId "com.example.adil.blo...

Write and read a list from file

This is a slightly weird request but I am looking for a way to write a list to file and then read it back some other time. I have no way to remake the lists so that they are correctly formed/formatted as the example below shows. My lists have data ...

Pick any kind of file via an Intent in Android

I would like to start an intentchooser for apps which can return any kind of file Currently I use (which I copied from the Android email source code for file attachment) Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.addCategory(Inte...

How can I view the Git history in Visual Studio Code?

I can execute various Git commands from Visual Studio Code, however I couldn't find a way to visualize the history....

Warning: Null value is eliminated by an aggregate or other SET operation in Aqua Data Studio

I have a problem when data is null and the warning has appear when the result is display. How to solve this problem?. How to change the null data to 0 when no data in the table?. This is my code:- SELECT DISTINCT c.username AS assigner_...

How to get the Development/Staging/production Hosting Environment in ConfigureServices

How do I get the Development/Staging/production Hosting Environment in the ConfigureServices method in Startup? public void ConfigureServices(IServiceCollection services) { // Which environment are we running under? } The ConfigureServices met...

Multidimensional arrays in Swift

Edit: As Adam Washington points out, as from Beta 6, this code works as is, so the question is no longer relevant. I am trying to create and iterate through a two dimensional array: var array = Array(count:NumColumns, repeatedValue:Array(count:Num...

adb shell command to make Android package uninstall dialog appear

I have adb running and device is connected to my system in debugging mode, I want to uninstall app using intent launch using adb shell am start <INTENT> I don't want to uninstall using adb uninstall com.company.apppackage and I don't want to ...

Increase number of axis ticks

I'm generating plots for some data, but the number of ticks is too small, I need more precision on the reading. Is there some way to increase the number of axis ticks in ggplot2? I know I can tell ggplot to use a vector as axis ticks, but what I wa...

React.js: Identifying different inputs with one onChange handler

Curious what the right way to approach this is: var Hello = React.createClass({ getInitialState: function() { return {total: 0, input1:0, input2:0}; }, render: function() { return ( <div>{this.state.total}<br/> ...

Check if value exists in column in VBA

I have a column of numbers of over 500 rows. I need to use VBA to check if variable X matches any of the values in the column. Can someone please help me?...

Find the day of a week

Let's say that I have a date in R and it's formatted as follows. date 2012-02-01 2012-02-01 2012-02-02 Is there any way in R to add another column with the day of the week associated with the date? The dataset is really large, so it woul...

SQL SELECT everything after a certain character

I need to extract everything after the last '=' (http://www.domain.com?query=blablabla - > blablabla) but this query returns the entire strings. Where did I go wrong in here: SELECT RIGHT(supplier_reference, CHAR_LENGTH(supplier_reference) - SUBSTRI...

How to use Global Variables in C#?

How do I declare a variable so that every class (*.cs) can access its content, without an instance reference?...

Python Pandas User Warning: Sorting because non-concatenation axis is not aligned

I'm doing some code practice and applying merging of data frames while doing this getting user warning /usr/lib64/python2.7/site-packages/pandas/core/frame.py:6201: FutureWarning: Sorting because non-concatenation axis is not aligned. A future ...

How do I configure the proxy settings so that Eclipse can download new plugins?

I am working with Eclipse 3.7, on an Windows XP environment behind a web proxy. I want to install the Groovy plugin on a newly unzipped Eclipse Indigo (Eclipse Java EE Indigo M4). I added the update site to the Available Software Site list. But Ecl...

Replace multiple characters in one replace call

Very simple little question, but I don't quite understand how to do it. I need to replace every instance of '_' with a space, and every instance of '#' with nothing/empty. var string = '#Please send_an_information_pack_to_the_following_address:';...

Implementing autocomplete

I am having trouble finding a good autocomplete component for Angular2. Just anything that I can pass a list of key-label objects to and have a nice autocomplete on an input field. Kendo does not support Angular 2 yet and that it what we mostly use ...

How can I hide an HTML table row <tr> so that it takes up no space?

How can I hide an HTML table row <tr> so that it takes up no space? I have several <tr>'s set to style="display:none;", but they still affect the size of the table and the table's border reflects the hidden rows....

How to make an array of arrays in Java

Hypothetically, I have 5 string array objects: String[] array1 = new String[]; String[] array2 = new String[]; String[] array3 = new String[]; String[] array4 = new String[]; String[] array5 = new String[]; and I want another array object to conta...

moment.js 24h format

How do I display my time in 24h format instead of 12? I am using moment.js. I am pretty sure that these lines could have something to do with it. meridiem : function (hours, minutes, isLower) { if (hours > 11) { return is...

Transparent background in JPEG image

How can I set a transparent background on JPEG image? This is a doubt of many colleagues of mine. What would be the solution using Paint on Windows? What are the other simple alternatives?...

Html ordered list 1.1, 1.2 (Nested counters and scope) not working

I use nested counters and scope to create an ordered list: _x000D_ _x000D_ ol {_x000D_ counter-reset: item;_x000D_ padding-left: 10px;_x000D_ }_x000D_ li {_x000D_ display: block_x000D_ }_x000D_ li:before {_x000D_ content: counters(it...

ValueError : I/O operation on closed file

import csv with open('v.csv', 'w') as csvfile: cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL) for w, c in p.items(): cwriter.writerow(w + c) Here, p is a dictionary, w and c both are strings. W...

How to install toolbox for MATLAB

I am just wondering, if I need a toolbox which not available in my MATLAB, how do I do that? For example: if I need image processing toolbox, how do I get it?...

What does "zend_mm_heap corrupted" mean

All of the sudden I've been having problems with my application that I've never had before. I decided to check the Apache's error log, and I found an error message saying "zend_mm_heap corrupted". What does this mean. OS: Fedora Core 8 Apache: 2.2...

React Native version mismatch

Getting the following message when I init a new project and then launch the Xcode emulator: React-Native Version Mismatch Javascript Version 0.50.1 Native version: 0.50.0 Make sure you have rebuilt the native code. ... Does anyone ...

syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING

I have been staring at this code for hours now and I cannot figure out where my mistake is. I know this syntax error usually comes up because of some missing or out of place curly brace or some issue with single/double quotes and I'm not sure there i...

How to serve up a JSON response using Go?

Question: Currently I'm printing out my response in the func Index like this fmt.Fprintf(w, string(response)) however, how can I send JSON properly in the request so that it maybe consumed by a view? package main import ( "fmt" "github.com...

How do I give ASP.NET permission to write to a folder in Windows 7?

I have a new Win7 workstation and I am trying to get ScrewTurn Wiki to run on the machine. My STW installation is using the file system option to store its data, and as such I need to give write permissions to the ASP.NET worker process in the folde...

Pandas - 'Series' object has no attribute 'colNames' when using apply()

I need to use a lambda function to do a row by row computation. For example create some dataframe import pandas as pd import numpy as np def myfunc(x, y): return x + y colNames = ['A', 'B'] data = np.array([np.arange(10)]*2).T df = pd.DataFra...

Cannot find firefox binary in PATH. Make sure firefox is installed

In Selenium Grid I am trying to execute a simple program and I'm getting Cannot find firefox binary in PATH though I have added the binary path in my code. My code and the error are given below. Kindly need help. Thanks in advance. Code package Sam...

Regular expression for 10 digit number without any special characters

What is the regular expression for a 10 digit numeric number (no special characters and no decimal)....

PHP form - on submit stay on same page

I have a PHP form that is located on file contact.html. The form is processed from file processForm.php. When a user fills out the form and clicks on submit, processForm.php sends the email and direct the user to - processForm.php with a message o...

Creating virtual directories in IIS express

Is there any way to create a virtual directory in IIS express? I know that Cassini can't do this and it would be nice to be able to do this without using a full version of IIS. I've got it so far that I can browse to my application locally in IIS ex...

Using column alias in WHERE clause of MySQL query produces an error

The query I'm running is as follows, however I'm getting this error: #1054 - Unknown column 'guaranteed_postcode' in 'IN/ALL/ANY subquery' SELECT `users`.`first_name`, `users`.`last_name`, `users`.`email`, SUBSTRING(`locations`.`raw`,-6,4) AS `...

Replace last occurrence of a string in a string

Anyone know of a very fast way to replace the last occurrence of a string with another string in a string? Note, the last occurrence of the string might not be the last characters in the string. Example: $search = 'The'; $replace = 'A'; $subject = 'T...

Merge two array of objects based on a key

I have two arrays: Array 1: [ { id: "abdc4051", date: "2017-01-24" }, { id: "abdc4052", date: "2017-01-22" } ] and array 2: [ { id: "abdc4051", name: "ab" }, { id: "abdc4052", name: "abc" } ] I need to merge these two arrays based on...

How to round a floating point number up to a certain decimal place?

Suppose I have 8.8333333333333339, and I want to convert it to 8.84. How can I accomplish this in Python? round(8.8333333333333339, 2) gives 8.83 and not 8.84. I am new to Python or programming in general. I don't want to print it as a string, and ...

Project with path ':mypath' could not be found in root project 'myproject'

I'm migrated from Eclipse to android studio 0.5.8, after importing my project to android studio i was getting the error Project with path ':progressfragment' could not be found in root project 'project_name'. Project Struture : Libs Complete St...

How to enable copy paste from between host machine and virtual machine in vmware, virtual machine is ubuntu

I am trying to copy and paste from my pc to the vm but i cant. I also enable copy and paste but i still can't copy and paste from my pc to the vm. My pc runs windows 8.1 my vm has fedora....

What is a 'workspace' in Visual Studio Code?

I can't quite believe I am asking this question, but I have not been able to find a definition in the documentation. In case it isn't painfully obvious, I am (very) new to Visual Studio Code. For example, Visual Studio Code talks about applying sett...

Difference between npx and npm?

I have just started learning React, and Facebook helps in simplifying the initial setup by providing the following ready-made project. If I have to install the skeleton project I have to type npx create-react-app my-app in command-line. I was won...

How to make a gap between two DIV within the same column

I have two paragraphs. The two paragraphs are located in the same column. Now my question is I need to make the two paragraphs in two separate boxes, down each other. In other words, gap between two boxes coming down each other. HTML Code <d...

how do I loop through a line from a csv file in powershell

I want to process a csv file in powershell, but I don't know what the column headings in the CSV file will be when it is processed. For example: $path = "d:\scratch\export.csv" $csv = Import-csv -path $path foreach($line in $csv) { foreach (...

Image, saved to sdcard, doesn't appear in Android's Gallery app

I save an image to the sdcard and it doesn't appear in the Gallery application until I pull off the sdcard and return it back. Do you have any idea why is it so? Seems like the Gallery application has some cache that isn't updated on file save... ...

Bootstrap: add margin/padding space between columns

I'm trying to put some extra margin/padding space between columns on my Bootstrap grid layout. I've tried this but I don't like the result. Here is my code: <div class="row"> <div class="text-center col-md-6"> Wid...

Arrays.asList() of an array

What is wrong with this conversion? public int getTheNumber(int[] factors) { ArrayList<Integer> f = new ArrayList(Arrays.asList(factors)); Collections.sort(f); return f.get(0)*f.get(f.size()-1); } I made this after reading the ...

Maximum concurrent Socket.IO connections

This question has been asked previously but not recently and not with a clear answer. Using Socket.io, is there a maximum number of concurrent connections that one can maintain before you need to add another server? Does anyone know of any active ...

Importing a long list of constants to a Python file

In Python, is there an analogue of the C preprocessor statement such as?: #define MY_CONSTANT 50 Also, I have a large list of constants I'd like to import to several classes. Is there an analogue of declaring the constants as a long sequence of sta...

Django download a file

I'm quite new to using Django and I am trying to develop a website where the user is able to upload a number of excel files, these files are then stored in a media folder Webproject/project/media. def upload(request): if request.POST: fo...

How do I get the Session Object in Spring?

I am relatively new to Spring and Spring security. I was attempting to write a program where I needed to authenticate a user at the server end using Spring security, I came up with the following: public class CustomAuthenticationProvider extends A...

How to make Bootstrap 4 cards the same height in card-columns?

I am using Bootstrap 4 alpha 2 and taking advantage on cards. Specifically, I am working with this example taken from the official docs. How can I make all cards to be the same height? All I can think by now is setting the following CSS rule: .car...

MSSQL Error 'The underlying provider failed on Open'

I was using an .mdf for connecting to a database and entityClient. Now I want to change the connection string so that there will be no .mdf file. Is the following connectionString correct? <connectionStrings> <!--<add name="conString...

How to check if the given string is palindrome?

Definition: A palindrome is a word, phrase, number or other sequence of units that has the property of reading the same in either direction How to check if the given string is a palindrome? This was one of the FAIQ [Frequently Asked Interview Ques...

How does python numpy.where() work?

I am playing with numpy and digging through documentation and I have come across some magic. Namely I am talking about numpy.where(): >>> x = np.arange(9.).reshape(3, 3) >>> np.where( x > 5 ) (array([2, 2, 2]), array([0, 1, 2]))...

.htaccess not working apache

I have a server from AWS EC2 service running on Linux ubuntu and I have installed apache, php, and mysql. I have added a .htaccess file in my document root /var/www/html. I entered this code in it: ErrorDocument 404 /var/www/html/404.php and it is...

How do I get milliseconds from epoch (1970-01-01) in Java?

I need to get the number of milliseconds from 1970-01-01 UTC until now UTC in Java. I would also like to be able to get the number of milliseconds from 1970-01-01 UTC to any other UTC date time....

assigning column names to a pandas series

I have a pandas series object x Ezh2 2 Hmgb 7 Irf1 1 I want to save this as a dataframe with column names Gene and Count respectively I tried x_df = pd.DataFrame(x,columns = ['Gene','count']) but it does not work.The final form I want i...

Viewing full version tree in git

I am using the command line version of Git and gitk. I want to see the full version tree, not just the part that is reachable from the currently checked out version. Is it possible?...

Difference between float and decimal data type

What difference does it make when I use float and decimal data types in MySQL?. When should I use which?...

Executing command line programs from within python

I'm building a web application that will is going to manipulate (pad, mix, merge etc) sound files and I've found that sox does exactly what I want. Sox is a linux command line program and I'm feeling a little uncomfortable with having the python web ...

How to convert enum value to int?

I have a function which return a type int. However, I only have a value of the TAX enumeration. How can I cast the TAX enumeration value to an int? public enum TAX { NOTAX(0),SALESTAX(10),IMPORTEDTAX(5); private int value; private TAX(...

CURL Command Line URL Parameters

I am trying to send a DELETE request with a url parameter using CURL. I am doing: curl -H application/x-www-form-urlencoded -X DELETE http://localhost:5000/locations` -d 'id=3' However, the server is not seeing the parameter id = 3. I tried using ...

Set new id with jQuery

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What is Mocking?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ....

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I registered on http://Oracle.com in order to download 11g R2 Express edition database. But http://Oracle.com offered me download links only for Windows 32bit and for Linux 64bit. Is there somewhere 64bit Windows version of Oracle 11g XE database? ...

Optimum way to compare strings in JavaScript?

I am trying to optimize a function which does binary search of strings in JavaScript. Binary search requires you to know whether the key is == the pivot or < the pivot. But this requires two string comparisons in JavaScript, unlike in C like lan...

Scraping: SSL: CERTIFICATE_VERIFY_FAILED error for http://en.wikipedia.org

I'm practicing the code from 'Web Scraping with Python', and I keep having this certificate problem: from urllib.request import urlopen from bs4 import BeautifulSoup import re pages = set() def getLinks(pageUrl): global pages html = urlop...

Order of execution of tests in TestNG

How to customize the order of execution of tests in TestNG? For example: public class Test1 { @Test public void test1() { System.out.println("test1"); } @Test public void test2() { System.out.println("test2"); } @Test ...

How to pass variables from one php page to another without form?

I want to know how to pass a variable from one page to another in PHP without any form. What I want to achieve is this: The user clicks on a link A variable is passed which contains a string. The variable can be accessed on the other page so that ...

Troubleshooting misplaced .git directory (nothing to commit)

I started getting this message. No matter what I edit and try to commit, it says there is nothing to commit. Looks like git does not see my working directory and looking somewhere else. If I run git status it outputs the same: nothing to commit (w...

regex match any single character (one character only)

How do you match any one character with a regular expression? I am writing this question and the following answer for a general reference. A number of other questions on Stack Overflow sound like they promise a quick answer, but are actually asking ...

What is a callback in java

Possible Duplicate: What is a callback function? I have read the wikipedia definition of a callback but I still didn't get it. Can anyone explain me what a callback is, especially the following line In computer programming, a callback...

Draw on HTML5 Canvas using a mouse

I want to draw on a HTML Canvas using a mouse (for example, draw a signature, draw a name, ...) How would I go about implementing this?...

Foreach with JSONArray and JSONObject

I'm using org.json.simple.JSONArray and org.json.simple.JSONObject. I know that these two classes JSONArray and JSONObject are incompatible, but still I want to do quite a natural thing - I want to for-each over JSONArray parsing at each iteration st...

How does delete[] know it's an array?

Alright, I think we all agree that what happens with the following code is undefined, depending on what is passed, void deleteForMe(int* pointer) { delete[] pointer; } The pointer could be all sorts of different things, and so performing an u...

IntelliJ, can't start simple web application: Unable to ping server at localhost:1099

I'm trying to make a simple web app in IntelliJ by following this tutorial: http://wiki.jetbrains.net/intellij/Creating_a_simple_Web_application_for_Tomcat_in_IntelliJ_IDEA_12 I believe my Tomcat is installed correctly since I see the tomcat picture...

Batch Files - Error Handling

I'm currently writing my first batch file for deploying an asp.net solution. I've been Googling a bit for a general error handling approach and can't find anything really useful. Basically if any thing goes wrong I want to stop and print out what we...

How to run TypeScript files from command line?

I'm having a surprisingly hard time finding an answer to this. With plain Node.JS, you can run any js file with node path/to/file.js, with CoffeeScript it's coffee hello.coffee and ES6 has babel-node hello.js. How do I do the same with Typescript? M...

JCheckbox - ActionListener and ItemListener?

Both ActionListener and ItemListener are used to fire an event with JCheckBox? So, what's the difference between them and in which case one of them is preferred to the other?...

how to clear localstorage,sessionStorage and cookies in javascript? and then retrieve?

How to completely clear localstorage, sessionStorage and cookies in javascript ? Is there any way one can get these values back after clearing them ?...

How to make a view with rounded corners?

I am trying to make a view in android with rounded edges. The solution I found so far is to define a shape with rounded corners and use it as the background of that view. Here is what I did, define a drawable as given below: <padding andr...

How do I install the ext-curl extension with PHP 7?

I've installed PHP 7 using this repo, but when I try to run composer install, it's giving this error: [package] requires ext-curl * -> the requested PHP extension curl is missing from your system. With PHP 5, you can easily install it by ...

How to break out or exit a method in Java?

The keyword break in Java can be used for breaking out of a loop or switch statement. Is there anything which can be used to break from a method?...

Open URL in new window with JavaScript

I'm making a "share button" to share the current page. I would like to take the current page URL and open it in a new window. I have the current URL part working, but can't seem to get the next part working. I'm struggling with the syntax. I would ...

Typescript Date Type?

How do I express dates in TypeScript? Dates aren't a TypeScript type, so do I use any or object? Seems like there would be a "right" way to do: let myDate: any = new Date(); I couldn't find much on Google, despite it being such a simple question....

How do you do a ‘Pause’ with PowerShell 2.0?

OK, I'm losing it. PowerShell is annoying me. I'd like a pause dialog to appear, and it won't. PS W:\>>> $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") Exception calling "ReadKey" with "1" argument(s): "The method or operation is not imple...

mat-form-field must contain a MatFormFieldControl

We are trying to build our own form-field-Components at our Company. We are trying to wrap material design's Components like this: field: <mat-form-field> <ng-content></ng-content> <mat-hint align="start"><strong&...

codes for ADD,EDIT,DELETE,SEARCH in vb2010

I'm currently working on my thesis in school and they required me to use VB2010 and MS ACCESS 2010. what could be the easier way to connect and manipulate the DB? is it by using MS ACCESS 2003? or MS ACCESS 2007? I need some help because I'm new ...

Is there a keyboard shortcut (hotkey) to open Terminal in macOS?

One of my primary tools used for programming is my Terminal. It makes my programming process more efficient when I'm able to quickly open a Terminal window. In Ubuntu, I was using (window+Alt+T) to open Terminal. But now I use a Macbook at my progra...

ArrayList initialization equivalent to array initialization

I am aware that you can initialize an array during instantiation as follows: String[] names = new String[] {"Ryan", "Julie", "Bob"}; Is there a way to do the same thing with an ArrayList? Or must I add the contents individually with array.add()?...

The resource could not be loaded because the App Transport Security policy requires the use of a secure connection

I am facing the Problem when I have updated my Xcode to 7.0 or iOS 9.0. Somehow it started giving me the Titled error "The resource could not be loaded because the App Transport Security policy requires the use of a secure connection" Webserv...

How to set the background image of a html 5 canvas to .png image

I would like to know how it is possible to set the background image of a canvas to a .png file. I do not want to add the image in the back of the canvas and make the canvas transparent. I want the user to be able to actually draw on that canvas wit...

Failed to load resource: the server responded with a status of 500 (Internal Server Error) in Bind function

I'm trying to send a call using Ajax but in Chrome it is rising error but in Firefox there is no error. But still it can't calling the method. I tried to record my call in Firebug but there is no call request in Firebug. So that's the reason there is...

How can I get the first two digits of a number?

I want to check the first two digits of a number in Python. Something like this: for i in range(1000): if(first two digits of i == 15): print("15") elif(first two digits of i == 16): print("16") Is there a command to chec...

Initialising mock objects - MockIto

There are many ways to initialize a mock object using MockIto. What is best way among these ? 1. public class SampleBaseTestCase { @Before public void initMocks() { MockitoAnnotations.initMocks(this); } @RunWith(MockitoJUnitRunner....

Differences between git pull origin master & git pull origin/master

What is the difference between git pull origin master and git pull origin/master ?...

Cropping an UIImage

I've got some code that resizes an image so I can get a scaled chunk of the center of the image - I use this to take a UIImage and return a small, square representation of an image, similar to what's seen in the album view of the Photos app. (I know ...

Why would a "java.net.ConnectException: Connection timed out" exception occur when URL is up?

I'm getting a ConnectException: Connection timed out with some frequency from my code. The URL I am trying to hit is up. The same code works for some users, but not others. It seems like once one user starts to get this exception they continue to ...

How can I dynamically add items to a Java array?

In PHP, you can dynamically add elements to arrays by the following: $x = new Array(); $x[] = 1; $x[] = 2; After this, $x would be an array like this: {1,2}. Is there a way to do something similar in Java?...

How to replace values at specific indexes of a python list?

If I have a list: to_modify = [5,4,3,2,1,0] And then declare two other lists: indexes = [0,1,3,5] replacements = [0,0,0,0] How can I take to_modify's elements as index to indexes, then set corresponding elements in to_modify to replacements, i...

htons() function in socket programing

I am new to socket programming and I am trying to understand the operation of htons(). I've read a few tutorials on the Internet like this and this one for instance. But I couldn't understand what htons() does exactly. I tried the following code: #...

Maven and adding JARs to system scope

I have a JAR in my Android project and I want it to be added to final APK. Okay, here I go: <dependency> <groupId>com.loopj.android.http</groupId> <artifactId>android-async-http</artifactId> ...

How can I stop "property does not exist on type JQuery" syntax errors when using Typescript?

I am only using one line of jQuery in my application: $("div.printArea").printArea(); But this is giving me a Typescript error: The property 'printArea' does not exist on type JQuery? Can someone tell me how I can stop this error appearing?...

height: calc(100%) not working correctly in CSS

I have a div that I want to fill the whole height of the body less a set number in pixels. But I can't get height: calc(100% - 50px) to work. The reason I want to do this is I have elements that have dynamic heights based on some varying criteria, ...