Examples On Programing Languages

jQuery text() and newlines

I want to be able to say $(someElem).text('this\n has\n newlines); and it renders with newlines in the browser. The only workaround I have found is to set the css property 'white-space' to 'pre' on someElem. This almost works, but then I have an ...

Remove local git tags that are no longer on the remote repository

We use tags in git as part of our deployment process. From time to time, we want to clean up these tags by removing them from our remote repository. This is pretty straightforward. One user deletes the local tag and the remote tag in one set of co...

Integration Testing POSTing an entire object to Spring MVC controller

Is there a way to pass an entire form object on mock request when integration testing a spring mvc web app? All I can find is to pass each field separately as a param like this: mockMvc.perform(post("/somehwere/new").param("items[0].value","value"))...

How to Generate unique file names in C#

I have implemented an algorithm that will generate unique names for files that will save on hard drive. I'm appending DateTime: Hours,Minutes,Second and Milliseconds but still it generates duplicate name of files because im uploading multiple files a...

window.open target _self v window.location.href?

I need to redirect the user using JavaScript. Which is the preferred method? window.open("webpage.htm", "_self"); or window.location.href = "webpage.htm"; ...

Query to display all tablespaces in a database and datafiles

How to write a query to display all tablespaces in database suppose db and it's corresponding datafiles belong to user SCOTT. I can connect to SCOTT account and see it but I like to connect to sys as sysdba to see all tablespaces and datafiles belong...

How to insert a string which contains an "&"

How can I write an insert statement which includes the & character? For example, if I wanted to insert "J&J Construction" into a column in the database. I'm not sure if it makes a difference, but I'm using Oracle 9i....

What should main() return in C and C++?

What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void main() — and why? And how about the arguments? If int main() then return 1 or return 0? There are numerous duplicates of this question, incl...

GROUP BY to combine/concat a column

I have a table as follow: ID User Activity PageURL 1 Me act1 ab 2 Me act1 cd 3 You act2 xy 4 You act2 st I want to group by User and Activity such that I end up with something like: User ...

Git On Custom SSH Port

My VPS provider recommends that I leave my SSH port to the custom port number they assign it by default (not 22). The thing is the while I know I can give the port number when create a remote config, it seems like I can't do the same when doing a gi...

Why is printing "B" dramatically slower than printing "#"?

I generated two matrices of 1000 x 1000: First Matrix: O and #. Second Matrix: O and B. Using the following code, the first matrix took 8.52 seconds to complete: Random r = new Random(); for (int i = 0; i < 1000; i++) { for (int j = 0; j &l...

How do I remove time part from JavaScript date?

I have a date '12/12/1955 12:00:00 AM' stored in a hidden column. I want to display the date without the time. How do I do this?...

How to center cell contents of a LaTeX table whose columns have fixed widths?

Consider the following piece of LaTeX code: \begin{tabular}{p{1in}p{1in}} A & B\\ C & D\\ \end{tabular} How can I make the contents of each cell aligned in the center of the cell rather than the left? Note that I want to make sure that t...

init and arguments in Python

I want to understand arguments of the constructor __init__ in Python. class Num: def __init__(self,num): self.n = num def getn(self): return self.n def getone(): return 1 myObj = Num(3) print myObj.getn() RESUL...

substring of an entire column in pandas dataframe

I have a pandas dataframe "df". In this dataframe I have multiple columns, one of which I have to substring. Lets say the column name is "col". I can run a "for" loop like below and substring the column: for i in range(0,len(df)): df.iloc[i].col =...

Prevent scrolling of parent element when inner element scroll position reaches top/bottom?

I have a little "floating tool box" - a div with position:fixed; overflow:auto. Works just fine. But when scrolling inside that box (with the mouse wheel) and reaching the bottom OR top, the parent element "takes over" the "scroll request" : The doc...

How do I POST with multipart form data using fetch?

I am fetching a URL like this: fetch(url, { mode: 'no-cors', method: method || null, headers: { 'Accept': 'application/json, application/xml, text/plain, text/html, *.*', 'Content-Type': 'multipart/form-data' }, body: JSON.stringif...

Hive load CSV with commas in quoted fields

I am trying to load a CSV file into a Hive table like so: CREATE TABLE mytable ( num1 INT, text1 STRING, num2 INT, text2 STRING ) ROW FORMAT DELIMITED FIELDS TERMINATED BY ","; LOAD DATA LOCAL INPATH '/data.csv' OVERWRITE INTO TABLE mytable; ...

Difference between one-to-many and many-to-one relationship

What is the real difference between one-to-many and many-to-one relationship? It is only reversed, kind of? I can't find any 'good-and-easy-to-understand' tutorial about this topic other than this one: SQL for Beginners: Part 3 - Database Relationsh...

Invalid application of sizeof to incomplete type with a struct

I have a struct where I put all the information about the players. That's my struct: struct player{ int startingCapital; int currentCapital; int startingPosition; int currentPosition; int activePlayer; int canPlay; }; And...

Throwing multiple exceptions in a method of an interface in java

I wanted to ask that how to mention this in my interface public class find(int x) throws A_Exception, B_Exception{ ---- ---- --- } i want to say that i can mention One exception in an interface but how to mention in my interface that my method wi...

How to find out which processes are using swap space in Linux?

Under Linux, how do I find out which process is using the swap space more?...

How to get arguments with flags in Bash

I know that I can easily get positioned parameters like this in bash: $0 or $1 I want to be able to use flag options like this to specify for what each parameter is used: mysql -u user -h host What is the best way to get -u param value and -h pa...

Placing/Overlapping(z-index) a view above another view in android

I have a linear layout which consists of imageview and textview , one below another in a linear layout. <LinearLayout android:orientation="horizontal" ... > <ImageView android:id="@+id/thumbnail" android:layout_weight="0.8" ...

How to find tags with only certain attributes - BeautifulSoup

How would I, using BeautifulSoup, search for tags containing ONLY the attributes I search for? For example, I want to find all <td valign="top"> tags. The following code: raw_card_data = soup.fetch('td', {'valign':re.compile('top')}) gets ...

Difference between "or" and || in Ruby?

What's the difference between the or and || operators in Ruby? Or is it just preference?...

How to center text vertically with a large font-awesome icon?

Lets say I have a bootstrap button with a font-awesome icon and some text: <div> <i class='icon icon-2x icon-camera'></i> hello world </div> How do I make text appear vertically centered? Text is aligned with the bo...

Why powershell does not run Angular commands?

I have started to learn Angular but I note that powershell in Windows gives me an error whenever I make an angular command like: ng new new-app or ng serve this is the error what I got: ng : File C:\Users\< username >\AppData\Roaming\npm...

Python For loop get index

I am writing a simple Python for loop to prnt the current character in a string. However, I could not get the index of the character. Here is what I have, does anyone know a good way to get the current index of the character in the loop? loopme = '...

How to set the component size with GridLayout? Is there a better way?

I am working on a larger GUI with Java and I am becoming angry on Layout Managers. I have a "Settings-Panel" with a variable number of JComponents in it (Labels, Buttons, JSpinners, JSliders,...). I just want the following: JLabel <-> JComponen...

LINQ order by null column where order is ascending and nulls should be last

I'm trying to sort a list of products by their price. The result set needs to list products by price from low to high by the column LowestPrice. However, this column is nullable. I can sort the list in descending order like so: var products = fr...

ant warning: "'includeantruntime' was not set"

I receive the following warning: [javac] build.xml:9: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds What does this mean?...

npm install won't install devDependencies

On windows for some reason when I run npm install it won't install devDependencies. AFAIK it should. If I run npm install --dev devDependencies are installed. I don't understand why npm install doesn't install devDependencies too, but installs only d...

Calling a JavaScript function returned from an Ajax response

I have a system where I send an Ajax command, which returns a script block with a function in it. After this data is correctly inserted in the DIV, I want to be able to call this function to perform the required actions. Is this possible?...

Merging 2 branches together in GIT

I've only just started to use GIT and think its wonderful, however I'm a little confused over what the merge command does. Let us say we have a working project in the branch "A". I go home and make changes to this branch and save it as "B". Another...

Inner join with count() on three tables

Simple and fast question, i have those tables: //table people | pe_id | pe_name | | 1 | Foo | | 2 | Bar | //orders table | ord_id | pe_id | ord_title | | 1 | 1 | First order | | 2 | 2 | Order two | | 3 | 2 | Third ...

Excel VBA Open a Folder

Using 2010 Excel VBA - I'm just trying to open a folder through a sub. What am I doing wrong here? VBA Sub openFolder() Dim preFolder As String, theFolder As String, fullPath as String theFolder = Left(Range("T12").Value, 8) preFolder ...

Git push requires username and password

I cloned a Git repository from my GitHub account to my PC. I want to work with both my PC and laptop, but with one GitHub account. When I try to push to or pull from GitHub using my PC, it requires a username and password, but not when I'm using th...

What is a pre-revprop-change hook in SVN, and how do I create it?

I wanted to edit a log comment in the repository browser and received an error message that no pre-revprop-change hook exists for the repository. Besides having a scary name, what is a pre-revprop-change hook, and how do I create it?...

How to run SUDO command in WinSCP to transfer files from Windows to linux

I am trying to use WinSCP to transfer files over to a Linux Instance from Windows. Im using private key for my instance to login to Amazon instance using ec2-user. However ec2-user does not have access to write to the Linux instance How do i sudo...

How to do the equivalent of pass by reference for primitives in Java

This Java code: public class XYZ { public static void main(){ int toyNumber = 5; XYZ temp = new XYZ(); temp.play(toyNumber); System.out.println("Toy number in main " + toyNumber); } void pla...

How to redirect single url in nginx?

I'm in the process of reorganizing url structure. I need to setup redirect rules for specific urls - I'm using NGINX. Basically Something like this: http://example.com/issue1 --> http://example.com/shop/issues/custom_issue_name1 http://exampl...

Get the size of a 2D array

Okay, so I have a 2D array z[50][50] and z's size is therefore 50 * 50, but if I say z.length I only get 50 back. How do I get the real size of a 2D array?...

Bash command line and input limit

Is there some sort of character limit imposed in bash (or other shells) for how long an input can be? If so, what is that character limit? I.e. Is it possible to write a command in bash that is too long for the command line to execute? If there is n...

How can I add a vertical scrollbar to my div automatically?

I want to add a vertical scrollbar to my <div>. I've tried overflow: auto, but it is not working. I've tested my code in Firefox and Chrome. I'm pasting the div style code here: float: left; width: 1000px; overflow: auto; ...

Pandas Merging 101

How to perform a (INNER| (LEFT|RIGHT|FULL) OUTER) JOIN with pandas? How do I add NaNs for missing rows after merge? How do I get rid of NaNs after merging? Can I merge on the index? How do I merge multiple DataFrames? Cross join with pandas? merge? ...

How to recognize vehicle license / number plate (ANPR) from an image?

I have a web site that allows users to upload images of cars and I would like to put a privacy filter in place to detect registration plates on the vehicle and blur them. The blurring is not a problem but is there a library or component (open source...

Execute jar file with multiple classpath libraries from command prompt

I have a Maven project which generates a jar file and copies all dependencies to target/lib folder. I want to execute this project on client's machine (windows). So, I copied myproject.jar to C:\xyz folder and all dependencies to C:\xyz\lib folder....

Is it possible to capture a Ctrl+C signal and run a cleanup function, in a "defer" fashion?

I want to capture the Ctrl+C (SIGINT) signal sent from the console and print out some partial run totals. Is this possible in Golang? Note: When I first posted the question I was confused about Ctrl+C being SIGTERM instead of SIGINT....

PHP 7: Missing VCRUNTIME140.dll

I have an error when I start PHP 7 on Windows. When I run php on the command line, it returns a message box with system error: The program can't start because VCRUNTIME140.dll is missing from your computer. Try reinstalling the program to fi...

Parsing Json rest api response in C#

I am trying to pull a value from a rest api json response using C#. I have the following code: client.BaseUrl = "https://api.cloud.appcelerator.com"; request.Resource = "/v1/chats/create.json?key=" + cac.AppCode.ToString(); request.Method = Method....

Where is GACUTIL for .net Framework 4.0 in windows 7?

i've made an assembly in the .net framework that I intend to publish to the GAC but I can't find the gacutil utlity. I've been googling a while and I've found a lot of suggestions, but nothing works: Copy the assemby to %window%\assemby [DOES NOT ...

How to get the Android Emulator's IP address?

I want to get the currently running Android Emulator's IP address through code. How can it be achieved?...

How to get htaccess to work on MAMP

I am trying to get the .htaccess working in MAMP. The content of the .htaccess is a simple redirect line but it does not work. I am trying to manipulate URLs of a WordPress page, so I added the .htaccess file in my theme folder, but it is not workin...

Getting last day of the month in a given string date

My input string date is as below: String date = "1/13/2012"; I am getting the month as below: SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy"); Date convertedDate = dateFormat.parse(date); String month = new SimpleDateFormat("MM")...

How can I get nth element from a list?

How can I access a list by index in Haskell, analog to this C code? int a[] = { 34, 45, 56 }; return a[1]; ...

How do I validate a date in rails?

I want to validate a date in my model in Ruby on Rails, however, the day, month and year values are already converted into an incorrect date by the time they reach my model. For example, if I enter February 31st 2009 in my view, when I use Model.new...

libstdc++.so.6: cannot open shared object file: No such file or directory

I want to run Cilkscreen command with a cilk++ program but I'v got this error /usr/local/cilk/bin/../lib32/pinbin: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory Can you help...

macro for Hide rows in excel 2010

I'm kinda new to programming in VBA. I read some stuff on the internet but I couldnt find what I need or couldnt get it working. My problem: in worksheet 'sheet 1' in cell B6 a value is given for how many years a project will be exploited. in workshe...

Eclipse error: 'Failed to create the Java Virtual Machine'

I am getting this error message when I start Eclipse Helios on Windows 7: Failed to create the Java Virtual Machine My eclipse.ini looks as follows: -startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar -vm P:\Programs\jdk1.6\bin...

Powershell get ipv4 address into a variable

Is there an easy way in powershell 3.0 Windows 7 to get the local computer's ipv4 address into a variable?...

Getting request payload from POST request in Java servlet

I have a javascript library that is sending a POST request to my Java servlet, but in the doPost method, I can't seem to get the contents of the request payload. In chrome Developer Tools, all the content is in the Request Payload section in the head...

Are vectors passed to functions by value or by reference in C++

I'm coding in C++. If I have some function void foo(vector<int> test) and I call it in my program, will the vector be passed by value or reference? I'm unsure because I know vectors and arrays are similar and that a function like void bar(int t...

Getting content/message from HttpResponseMessage

I'm trying to get content of HttpResponseMessage. It should be: {"message":"Action '' does not exist!","success":false}, but I don't know, how to get it out of HttpResponseMessage. HttpClient httpClient = new HttpClient(); HttpResponseMessage respon...

move a virtual machine from one vCenter to another vCenter

I have the following problem: There two separate vCenters (ESXi). They cannot see each other or communicate in any way. I can create a Clone of a VM in vCenter1 but then I want to move that Clone in vCenter2. Is there a way that I can copy the Clon...

Retrieving subfolders names in S3 bucket from boto3

Using boto3, I can access my AWS S3 bucket: s3 = boto3.resource('s3') bucket = s3.Bucket('my-bucket-name') Now, the bucket contains folder first-level, which itself contains several sub-folders named with a timestamp, for instance 1456753904534. ...

Finding Android SDK on Mac and adding to PATH

I have installed Android Studio on my MacBook Air (OS Version 10.11 El Capitan) and have successfully written a small "hello, world" app and installed on device (Nexus 7) and ran on AVD. All I want to do now is be able to build the app and install i...

Oracle SQL: Use sequence in insert with Select Statement

Basically I want to run the following query: INSERT INTO historical_car_stats (historical_car_stats_id, year, month, make, model, region, avg_msrp, count) SELECT my_seq.nextval, '2010', '12', 'ALL', 'ALL', region, sum(a...

Remove special symbols and extra spaces and replace with underscore using the replace method

I want to remove all special characters and spaces from a string and replace with an underscore. The string is var str = "hello world & hello universe"; I have this now which replaces only spaces: str.replace(/\s/g, "_"); The resu...

Changing ViewPager to enable infinite page scrolling

Jon Willis has posted on how to enable an infinite scrolling with his code. In there he said that he made some changes in the ViewPager class int the android support library. Which changes have been made and how is it possible to "recompile" the libr...

How to make a simple popup box in Visual C#?

When I click a button, I want a box to popup on the screen and display a simple message. Nothing fancy really. How would I do that?...

In Java, how to find if first character in a string is upper case without regex

In Java, find if the first character in a string is upper case without using regular expressions....

How to export SQL Server 2005 query to CSV

I want to export some SQL Server 2005 data to CSV format (comma-separated with quotes). I can think of a lot of complicated ways to do it, but I want to do it the right way. I've looked at bcp, but I can't figure out how to put the quotes around the ...

How do I align a number like this in C?

I need to align a series of numbers in C with printf() like this example: -------1 -------5 ------50 -----100 ----1000 Of course, there are numbers between all those but it's not relevant for the issue at hand... Oh, consider the dashes as spaces,...

How do I kill a VMware virtual machine that won't die?

I've got a virtual machine running on a server that I can't stop or reboot - I can't log onto it anymore and I can't stop it using the VMware server console. There are other VM's running so rebooting the host is out of the question. Is there any oth...

C++11 rvalues and move semantics confusion (return statement)

I'm trying to understand rvalue references and move semantics of C++11. What is the difference between these examples, and which of them is going to do no vector copy? First example std::vector<int> return_vector(void) { std::vector<int&...

Convert this string to datetime

Possible Duplicate: PHP: Convert uncommon date format to timestamp in most efficient manner possible? How to convert this string to datetime format? 06/Oct/2011:19:00:02 I tried this but it doesn't work. $s = '06/Oct/2011:19:00:02'; $da...

Javascript to export html table to Excel

I need to export the html table in my page to an Excel when user clicks 'Export' button. Now, I found a solution here on stack overflow that works in Firefox. Export dynamic html table to excel in javascript in firefox browser Now, it doesn't handl...

Why I get 'list' object has no attribute 'items'?

Using Python 2.7, I have this list: qs = [{u'a': 15L, u'b': 9L, u'a': 16L}] I'd like to extract values out of it. i.e. [15, 9, 16] So I tried: result_list = [int(v) for k,v in qs.items()] But instead, I get this error: Traceback (most recen...

Convert PEM traditional private key to PKCS8 private key

I've been given a PEM file with a certificate and pub/private keys. Specifically it includes the headers -----BEGIN CERTIFICATE----- -----END CERTIFICATE----- -----BEGIN RSA PRIVATE KEY----- -----END RSA PRIVATE KEY----- -----BEGIN RSA ...

Multiple conditions in a C 'for' loop

I came across this piece of code. I generally use '&&' or '||' to separate multiple conditions in a for loop, but this code uses commas to do that. Surprisingly, if I change the order of the conditions the output varies. #include<stdio.h...

Load a UIView from nib in Swift

Here is my Objective-C code which I'm using to load a nib for my customised UIView: -(id)init{ NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"myXib" owner:self options:nil]; return [subviewArray objectAtIndex:0]; } What is...

jquery datatables hide column

Is there a way with the jquery datatables plugin to hide (and show) a table column? I figured out how to reload the table data: using fnClearTable and fnAddData. But my issue is that in one of my views for the table (e.g. a hidden mode) I don't wan...

Maven dependencies are failing with a 501 error

Recently Maven build jobs running in Jenkins are failing with the below exception saying that they couldn't pull dependencies from Maven Central and should use HTTPS. I'm not sure how to change the requests from HTTP to HTTPS. Could someone guide me ...

Impact of Xcode build options "Enable bitcode" Yes/No

Yesterday I recognized a ton of warnings regarding the parse.com library: URGENT: all bitcode will be dropped because '[path]/Parse.framework/Parse(PFAnalytics.o)' was built without bitcode. You must rebuild it with bitcode enabled (Xcode settin...

Can Python test the membership of multiple values in a list?

I want to test if two or more values have membership on a list, but I'm getting an unexpected result: >>> 'a','b' in ['b', 'a', 'foo', 'bar'] ('a', True) So, Can Python test the membership of multiple values at once in a list? What does t...

How to run a PowerShell script without displaying a window?

How is it possible to run a PowerShell script without displaying a window or any other sign to the user? In other words, the script should run quietly in the background without any sign to the user. Extra credit for an answer that does not use thir...

SQL Server Insert if not exists

I want to insert data into my table, but insert only data that doesn't already exist in my database. Here is my code: ALTER PROCEDURE [dbo].[EmailsRecebidosInsert] (@_DE nvarchar(50), @_ASSUNTO nvarchar(50), @_DATA nvarchar(30) ) AS BEGIN ...

Add a Progress Bar in WebView

I am trying to add a progress/loading bar to my application that uses WebView. I am confused on how to implement a progress bar that appears every time a link is clicked. Current code: public class CULearnBrowser extends Activity { WebView web...

When you use 'badidea' or 'thisisunsafe' to bypass a Chrome certificate/HSTS error, does it only apply for the current site?

Sometimes and especially very often when developing a web-application Chrome doesn't allow you to visit certain sites and throwing certificate/HSTS error. I've found that typing badidea (more recently thisisunsafe) in Chrome window will tell Chrome t...

What's the difference between using "let" and "var"?

ECMAScript 6 introduced the let statement. I've heard that it's described as a local variable, but I'm still not quite sure how it behaves differently than the var keyword. What are the differences?. When should let be used instead of var?...

Initialize a byte array to a certain value, other than the default null?

I'm busy rewriting an old project that was done in C++, to C#. My task is to rewrite the program so that it functions as close to the original as possible. During a bunch of file-handling the previous developer who wrote this program creates a str...

get index of DataTable column with name

I have some code which sets the value of cells in a DataRow by column name i.e. row["ColumnName"] = someValue; I want to also set the value for this row in the column immediately to the right of the one found above. Clearly if I was getting the c...

Python Pandas : pivot table with aggfunc = count unique distinct

df2 = pd.DataFrame({'X' : ['X1', 'X1', 'X1', 'X1'], 'Y' : ['Y2','Y1','Y1','Y1'], 'Z' : ['Z3','Z1','Z1','Z2']}) X Y Z 0 X1 Y2 Z3 1 X1 Y1 Z1 2 X1 Y1 Z1 3 X1 Y1 Z2 g=df2.groupby('X') pd.pivot_table(g, values='X', rows='Y', cols='Z...

Access to Image from origin 'null' has been blocked by CORS policy

I have JavaScript application in OpenLayers 3, and my base layer is created from local tiles. I work only in my computer so I do not know why I have CORS error. var newLayer = new ol.layer.Tile({ source: new ol.source.OSM({ url: 'E:/...

Do not want scientific notation on plot axis

I regularly do all kinds of scatter plots in R using the plot command. Sometimes both, sometimes only one of the plot axes is labelled in scientific notation. I do not understand when R makes the decision to switch to scientific notation. Surprising...

How to add number of days to today's date?

I need to be able to add 1, 2 , 5 or 10 days to today's date using jQuery....

How can I specify the schema to run an sql file against in the Postgresql command line

I run scripts against my database like this... psql -d myDataBase -a -f myInsertFile.sql The only problem is I want to be able to specify in this command what schema to run the script against. I could call set search_path='my_schema_01' but the f...

ASP.NET MVC - Set custom IIdentity or IPrincipal

I need to do something fairly simple: in my ASP.NET MVC application, I want to set a custom IIdentity / IPrincipal. Whichever is easier / more suitable. I want to extend the default so that I can call something like User.Identity.Id and User.Identity...

How to lock specific cells but allow filtering and sorting

I'm using the following code to lock the content of certain cells Sub LockCell(ws As Worksheet, strCellRng As String) With ws .Unprotect .Cells.Locked = False .Range(strCellRng).Locked = True .Protect Contents:=True, AllowFormattingCel...

Importing CSV data using PHP/MySQL

I'm having a bit of a problem trying to import data from a CSV and have a couple of questions on it that I haven't managed to solve myself yet. First off here's my code to help put things in perspective (tidied it up a bit, removing CSS and DB conne...

How to order events bound with jQuery

Lets say I have a web app which has a page that may contain 4 script blocks - the script I write may be found in one of those blocks, but I do not know which one, that is handled by the controller. I bind some onclick events to a button, but I find...

How do I create a HTTP Client Request with a cookie?

I've got a node.js Connect server that checks the request's cookies. To test it within node, I need a way to write a client request and attach a cookie to it. I understand that HTTP Requests have the 'cookie' header for this, but I'm not sure how t...

How do I check out a specific version of a submodule using 'git submodule'?

How would I go about adding a Git submodule for a specific tag or commit?...

Calling a class method raises a TypeError in Python

I don't understand how classes are used. The following code gives me an error when I try to use the class. class MyStuff: def average(a, b, c): # Get the average of three numbers result = a + b + c result = result / 3 ret...

How to pass a type as a method parameter in Java

In Java, how can you pass a type as a parameter (or declare as a variable)? I don't want to pass an instance of the type but the type itself (eg. int, String, etc). In C#, I can do this: private void foo(Type t) { if (t == typeof(String)) { ...

What does the "@" symbol do in Powershell?

I've seen the @ symbol used in PowerShell to initialise arrays. What exactly does the @ symbol denote and where can I read more about it?...

Asp.net - Add blank item at top of dropdownlist

Why is the dropdown not showing my blank item first? Here is what I have drpList.Items.Add(New ListItem("", "")) With drpList .DataSource = myController.GetList(userid) .DataTextField = "Name" .DataValueField = "ID" .DataBind() End ...

Maven 3 warnings about build.plugins.plugin.version

Since I updated to Maven 3 I get the following warning messages at each build : How can I get rid of these warnings? [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for proj:id:...

How do I keep the screen on in my App?

For my Android app I never want the phone to lock or the back light to turn off...

Pretty Printing JSON with React

I'm using ReactJS and part of my app requires pretty printed JSON. I get some JSON like: { "foo": 1, "bar": 2 }, and if I run that through JSON.stringify(obj, null, 4) in the browser console, it pretty prints, but when I use it in this react snipp...

How to get value in the session in jQuery

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