Examples On Programing Languages

Why is sed not recognizing \t as a tab?

sed "s/$.*$/\t\1/" $filename > $sedTmpFile && mv $sedTmpFile $filename I am expecting this sed script to insert a tab in front of every line in $filename however it is not. For some reason it is inserting a t instead....

Set UILabel line spacing

How can I modify the gap between lines (line spacing) in a multiline UILabel?...

Running a Python script from PHP

I'm trying to run a Python script from PHP using the following command: exec('/usr/bin/python2.7 /srv/http/assets/py/switch.py arg1 arg2'); However, PHP simply doesn't produce any output. Error reporting is set to E_ALL and display_errors is on. H...

Using putty to scp from windows to Linux

I'm trying to test some C code that I'm writing. The only issue is that the code needs to be executed on a remote machine. My laptop is pretty old, and there is no driver for my wireless card available for Ubuntu, so booting into Linux to circumvent...

How can I change NULL to 0 when getting a single value from a SQL function?

I have a query that counts the price of all items between two dates. Here is the select statement: SELECT SUM(Price) AS TotalPrice FROM Inventory WHERE (DateAdded BETWEEN @StartDate AND @EndDate) You can assume all of the tables have been set up ...

Logout button php

I have this code and need the code to add a logout button, can anyone write out the code for a log out button that will log out the user, I read something about destroy session but do not know how to write the code out, thank you! <?php inclu...

android - How to get view from context?

I want to get the view or findViewById() from Context? Or from intent? I'm trying to reach a specific view in my broadcast receiver and the parameter of onReceive are context and intent. Well, I have a class and within it is my broadcast receiver. ...

Are the PUT, DELETE, HEAD, etc methods available in most web browsers?

I've seen a couple questions around here like How to debug RESTful services, which mentions: Unfortunately that same browser won't allow me to test HTTP PUT, DELETE, and to a certain degree even HTTP POST. I've also heard that browsers support ...

How can I clear the content of a file?

I need to clear the contents of a particular file every time the applications starts. How do I do it?...

The import org.junit cannot be resolved

I need to solve a java problem for an interview, and they have sent me the test class. It starts with import org.junit.Before; and also has the following syntax at places: @RunWith(JUnit4.class) ... @Before ... @Test I haven't used Java in a w...

Razor View Engine : An expression tree may not contain a dynamic operation

I have a model similar to this: public class SampleModel { public Product Product { get; set; } } And in my controller I get an exception trying to print out @Html.TextBoxFor(p => p.Product.Name) This is the error: Exception: An expre...

Play local (hard-drive) video file with HTML5 video tag?

I want to achieve the following. <video src="file:///Users/username/folder/video.webm"> </video> The intent is that the user will be able to select a file from his/her hard drive. And the reason for not uploading is of course transmis...

How do I do a simple 'Find and Replace" in MsSQL?

Question is pretty self explanitory. I want to do a simple find and replace, like you would in a text editor on the data in a column of my database (which is MsSQL on MS Windows server 2003)...

Best practice multi language website

I've been struggling with this question for quite some months now, but I haven't been in a situation that I needed to explore all possible options before. Right now, I feel like it's time to get to know the possibilities and create my own personal pr...

How to negate 'isblank' function

I want to do "is not blank" in a custom formula. There is a isblank() function but I can find neither an isnotblank() function nor a way to say not, such as ! or ==False. How can I say is not blank?...

What is the difference between children and childNodes in JavaScript?

I have found myself using JavaScript and I ran across childNodes and children properties. I am wondering what the difference between them is. Also is one preferred to the other?...

Resizing an Image without losing any quality

How can I resize an image, with the image quality unaffected?...

iPhone hide Navigation Bar only on first page

I have the code below that hides and shows the navigational bar. It is hidden when the first view loads and then hidden when the "children" get called. Trouble is that I cannot find the event/action to trigger it to hide again when they get back to...

Ideal way to cancel an executing AsyncTask

I am running remote audio-file-fetching and audio file playback operations in a background thread using AsyncTask. A Cancellable progress bar is shown for the time the fetch operation runs. I want to cancel/abort the AsyncTask run when the user can...

Is there any free OCR library for Android?

I'm looking for a Java OCR that runs on Android, however Asprise doesn't seem to be a platform independent OCR. is there any opensource/free Java OCR I can use for android application development?...

JavaScript equivalent of PHP's in_array()

Is there a way in JavaScript to compare values from one array and see if it is in another array? Similar to PHP's in_array function?...

Git: How to find a deleted file in the project commit history?

Once upon a time, there was a file in my project that I would now like to be able to get. The problem is: I have no idea of when have I deleted it and on which path it was. How can I locate the commits of this file when it existed?...

AngularJs - ng-model in a SELECT

JSfiddle Problem: I have a SELECT-element in my page, which is filled in with an ng-repeat. It also has a ng-model which has a default value. When I change the value, the ng-model adapts, that's ok. But the dropdown-list shows an empty slot at lau...

How can I get the current array index in a foreach loop?

How do I get the current index in a foreach loop? foreach ($arr as $key => $val) { // How do I get the index? // How do I get the first element in an associative array? } ...

Insert Data Into Tables Linked by Foreign Key

I am using PostgreSQL. Customer ================== Customer_ID | Name Order ============================== Order_ID | Customer_ID | Price To insert an order, here is what I need to do usually, For example, "John" place "1.34" priced order. (1) ...

How do you generate a random double uniformly distributed between 0 and 1 from C++?

How do you generate a random double uniformly distributed between 0 and 1 from C++? Of course I can think of some answers, but I'd like to know what the standard practice is, to have: Good standards compliance Good randomness Good speed (speed i...

Unresolved reference issue in PyCharm

I have a directory structure +-- simulate.py +-- src ¦ +-- networkAlgorithm.py ¦ +-- ... And I can access the network module with sys.path.insert(). import sys import os.path sys.path.insert(0, "./src") from networkAlgorithm import ...

HTML radio buttons allowing multiple selections

In my HTML form I have the below as a set of radio buttons, depending on what radio button you select depends on what the next form <fieldset> is revealed, this all works. The problem is for some reason they are working like a check box and not...

How to use 'cp' command to exclude a specific directory?

I want to copy all files in a directory except some files in a specific sub-directory. I have noticed that cp command didn't have the --exclude option. So, how can I achieve this?...

How do I set an un-selectable default description in a select (drop-down) menu in HTML?

I have a drop down where the user selects a language: <select> <option>English</option> <option>Spanish</option> </select> I want the default option that is initially displayed to say "Select a language...

How to set aliases in the Git Bash for Windows?

How to alias command in Git Bash for Windows downloaded from git-scm.com ? I mean Bash commands not Git. (windows7) Edit: Writing aliases in .bashrc file (as suggested by @gturri) not adding it in console.(after system reboot)(I have never wrot...

How to pass parameters to $http in angularjs?

Assume that I have two input boxes with corresponding ng-model as fname and lname. If I call http request as : $http({method:'GET', url:'/search', params:{fname: fname, lname: lname}}) will it call to the url : /search?fname=fname&lname=lname...

How to import data from one sheet to another

I have two different work sheets in excel with the same headings in in all the row 1 cells(a1 = id, b1 = name, c1 = price). My question is, is there a way to import data(like the name) from 1 worksheet to the other where the "id" is the same in both ...

Launch programs whose path contains spaces

I need to launch programs in my local system using VBScript. But I am having trouble with the syntax. This is what I am using right now - Dim objShell Set objShell = WScript.CreateObject( "WScript.Shell" ) objShell.Run("iexplore") Set objShell = No...

How can I replace newlines using PowerShell?

Given test.txt containing: test message I want to end up with: testing a message I think the following should work, but it doesn't: Get-Content test.txt |% {$_-replace "t`r`n", "ting`r`na "} How can I do a find and replace where what I'm fin...

How do I convert a pandas Series or index to a Numpy array?

Do you know how to get the index or column of a DataFrame as a NumPy array or python list? ...

How to upgrade PowerShell version from 2.0 to 3.0

The OS that I am using is Windows 7, and the PowerShell version that is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0? Because there are cmdlets that version 2.0 can't recognize....

CSS last-child(-1)

I am looking for a css selector that lets me select the pre-last child of list. <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> <!-- select the...

Convert Unicode to ASCII without errors in Python

My code just scrapes a web page, then converts it to Unicode. html = urllib.urlopen(link).read() html.encode("utf8","ignore") self.response.out.write(html) But I get a UnicodeDecodeError: Traceback (most recent call last): File "/Applications...

How to align this span to the right of the div?

I have the following HTML: <div class="title"> <span>Cumulative performance</span> <span>20/02/2011</span> </div> with this CSS: .title { display: block; border-top: 4px solid #a7a59b; backg...

Python: Removing spaces from list objects

I have a list of objects appended from a mysql database and contain spaces. I wish to remove the spaces such as below, but the code im using doesnt work? hello = ['999 ',' 666 '] k = [] for i in hello: str(i).replace(' ','') k.append(i) p...

Get text from DataGridView selected cells

I have a DataGridView with cells from a database file that contains data. Basically, I want to get the text from the selected cells in the DataGridView and display it in a textbox at the click of the button. The code for the button click event is: P...

Python error: "IndexError: string index out of range"

I'm currently learning python from a book called 'Python for the absolute beginner (third edition)'. There is an exercise in the book which outlines code for a hangman game. I followed along with this code however I keep getting back an error in the ...

MySQL Insert query doesn't work with WHERE clause

What's wrong with this query: INSERT INTO Users( weight, desiredWeight ) VALUES ( 160, 145 ) WHERE id = 1; It works without the WHERE clause. I've seemed to have forgot my SQL....

Comment out HTML and PHP together

I have this code, <tr> <td><?php echo $entry_keyword; ?></td> <td><input type="text" name="keyword" value="<?php echo $keyword; ?>" /></td> </tr> <tr> <td&g...

Upgrade python in a virtualenv

Is there a way to upgrade the version of python used in a virtualenv (e.g. if a bugfix release comes out)? I could pip freeze --local > requirements.txt, then remove the directory and pip install -r requirements.txt, but this requires a lot of re...

Best practice for storing and protecting private API keys in applications

Most app developers will integrate some third party libraries into their apps. If it's to access a service, such as Dropbox or YouTube, or for logging crashes. The number of third party libraries and services is staggering. Most of those libraries an...

CSS Div stretch 100% page height

I have a navigation bar on the left hand side of my page, and I want it to stretch to 100% of the page height. Not just the height of the viewport, but including the areas hidden until you scroll. I don't want to use javascript to accomplish this. C...

Is Task.Result the same as .GetAwaiter.GetResult()?

I was recently reading some code that uses a lot of async methods, but then sometimes needs to execute them synchronously. The code does: Foo foo = GetFooAsync(...).GetAwaiter().GetResult(); Is this the same as Foo foo = GetFooAsync(...).Result; ...

Sending JSON object to Web API

I am trying to figure out how I can send some information from a form to a Web API action. This is the jQuery/AJAX I'm trying to use: var source = { 'ID': 0, 'ProductID': $('#ID').val(), 'PartNumber': $('#part-number').val...

Allowed memory size of 262144 bytes exhausted (tried to allocate 24576 bytes)

I was going crazy with this. I got the next message: Allowed memory size of 262144 bytes exhausted (tried to allocate 24576 bytes) TODO LIST Check phpinfo(), got the right php.ini route and edit it. Change memory_limit to memory_limit = 128M ...

Replace part of a string in Python?

I used regular expressions to get a string from a web page and part of the string may contain something I would like to replace with something else. How would it be possible to do this? My code is this, for example: stuff = "Big and small" if stuff....

How can I use goto in Javascript?

I have some code that I absolutely must implement using goto. For example, I want to write a program like this: start: alert("RINSE"); alert("LATHER"); repeat: goto start Is there a way to do that in Javascript?...

How do I flush the PRINT buffer in TSQL?

I have a very long-running stored procedure in SQL Server 2005 that I'm trying to debug, and I'm using the 'print' command to do it. The problem is, I'm only getting the messages back from SQL Server at the very end of my sproc - I'd like to be able ...

Counting unique values in a column in pandas dataframe like in Qlik?

If I have a table like this: df = pd.DataFrame({ 'hID': [101, 102, 103, 101, 102, 104, 105, 101], 'dID': [10, 11, 12, 10, 11, 10, 12, 10], 'uID': ['James', 'Henry', 'Abe', 'James', 'Henry', 'Brian', 'Claude', 'James'], ...

How to handle Uncaught (in promise) DOMException: The play() request was interrupted by a call to pause()

Below is my code in aspx page to allow playing audio's of wav format in the browser but with my current code I am unable to play wav audios in Chrome browser but it works in Firefox. How can I handle this exception? <script> window.onload ...

How to support HTTP OPTIONS verb in ASP.NET MVC/WebAPI application

I've setup an ASP.NET web application starting with a MVC 4/Web API template. It seems as though things are working really well - no problems that I'm aware of. I've used Chrome and Firefox to go through the site. I've tested using Fiddler and all of...

Why am I getting Unknown error in line 1 of pom.xml?

Getting unknown error at Line 1 in pom.xml in Eclipse IDE. It was working fine till yesterday, but all of a sudden after updating my project from master and after fixing merge conflicts getting "Unknown error" in pom.xml. Except me, none of my teamma...

SQLPLUS error:ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA

I downloaded SQLPLUS from Oracle: http://www.oracle.com/technetwork/topics/winx64soft-089540.html Basic Lite and SQL*Plus I then fired up SQL*Plus: c:\Program Files\Oracle\instantclient_12_1>sqlplus /nolog SQL*Plus: Release 12.1.0.2.0 Product...

How do I push a new local branch to a remote Git repository and track it too?

I want to be able to do the following: Create a local branch based on some other (remote or local) branch (via git branch or git checkout -b) Push the local branch to the remote repository (publish), but make it trackable so git pull and git push w...

Numpy where function multiple conditions

I have an array of distances called dists. I want to select dists which are between two values. I wrote the following line of code to do that: dists[(np.where(dists >= r)) and (np.where(dists <= r + dr))] However this selects only for the c...

Swift Open Link in Safari

I am currently opening the link in my app in a WebView, but I'm looking for an option to open the link in Safari instead....

Which characters need to be escaped when using Bash?

Is there any comprehensive list of characters that need to be escaped in Bash? Can it be checked just with sed? In particular, I was checking whether % needs to be escaped or not. I tried echo "h%h" | sed 's/%/i/g' and worked fine, without escapi...

Multiple bluetooth connection

I want to connect 3 devices via bluetooth (My Droid must connect to 2 bluetooth devices). I 've connected my Droid to 1 device using Bluetooth chat How should I modify it for multiple bluetooth devices? Could you help me please?...

Disable clipboard prompt in Excel VBA on workbook close

I have an Excel workbook, which using VBA code that opens another workbook, copies some data into the original, then closes the second workbook. When I close the second workbook (using Application.Close), I get a prompt for: Do you want to save ...

javascript create empty array of a given size

in javascript how would I create an empty array of a given size Psuedo code: X = 3; createarray(myarray, X, ""); output: myarray = ["","",""] ...

Function return value in PowerShell

I have developed a PowerShell function that performs a number of actions involving provisioning SharePoint Team sites. Ultimately, I want the function to return the URL of the provisioned site as a String so at the end of my function I have the follo...

Can VS Code run on Android?

Does anybody know about plans of MS to support running VS Code so it can run on Android OS?...

How can I monitor the thread count of a process on linux?

I would like to monitor the number of threads used by a specific process on Linux. Is there an easy way to get this information without impacting the performance of the process?...

Removing a non empty directory programmatically in C or C++

How to delete a non empty directory in C or C++? Is there any function? rmdir only deletes empty directory. Please provide a way without using any external library. Also tell me how to delete a file in C or C++?...

Pytorch reshape tensor dimension

For example, I have 1D vector with dimension (5). I would like to reshape it into 2D matrix (1,5). Here is how I do it with numpy >>> import numpy as np >>> a = np.array([1,2,3,4,5]) >>> a.shape (5,) >>> a = np.r...

How to get a value from a Pandas DataFrame and not the index and object type

Say I have the following DataFrame Letter Number A 1 B 2 C 3 D 4 Which can be obtained through the following code import pandas as pd letters=pd.Series(('A', 'B', 'C', 'D')) numbers=pd.Series((1, 2, 3, 4))...

What is the difference between a symbolic link and a hard link?

Recently I was asked this during a job interview. I was honest and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one....

Open links in new window using AngularJS

Is there a way to tell AngularJS that I want links to be opened in new windows when the user clicks on them? With jQuery I would do this: jQuery("a.openInNewWindow").click( function() { window.open(this.href); return false; }) Is there an...

ASP.NET MVC Page Won't Load and says "The resource cannot be found"

I am having a problem where I try to open my ASP.NET MVC application but I get the ASP.NET error page which says this: Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for ...

MySQl Error #1064

I keep getting this error: MySQL said: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO books.book(isbn10,isbn13,title,edition,aut...

Reset the graphical parameters back to default values without use of dev.off()

Such as margins, orientations and such... dev.off() does not work for me. I am often using RStudio, with its inbuilt graphics device. I then have plotting functions, which I want to plot either in the default RStudio graphics device, or if I called ...

What is the purpose of class methods?

I'm teaching myself Python and my most recent lesson was that Python is not Java, and so I've just spent a while turning all my Class methods into functions. I now realise that I don't need to use Class methods for what I would done with static meth...

Export table to file with column headers (column names) using the bcp utility and SQL Server 2008

I have seen a number of hacks to try to get the bcp utility to export column names along with the data. If all I am doing is dumping a table to a text file what is the most straightforward method to have bcp add the column headers? Here's the bcp co...

Where and how is the _ViewStart.cshtml layout file linked?

Here's the About.cshtml from the default MVC 3 template: @{ ViewBag.Title = "About Us"; } <h2>About</h2> <p> Put content here. </p> I would expect that a reference to the _ViewStart file would be found in the Abou...

R Markdown - changing font size and font type in html output

I am using R Markdown in RStudio and the knit HTML option to create HTML output. However, the font used in the ouput for plain text blocks is rather small and I would like to change it to a differnt font and increase the font size. Can someone show a...

Read tab-separated file line into array

I would like to read a file into a script, line by line. Each line in the file is multiple values separated by a tab, I'd like to read each line into an array. Typical bash "read file by line" example; while read line do echo $line; done < "myf...

How to handle Pop-up in Selenium WebDriver using Java

I want to handle sign-in part in rediff.com, but the below code doesn't work for that: driver.get("http://www.rediff.com/"); WebElement sign = driver.findElement(By.xpath("//html/body/div[3]/div[3]/span[4]/span/a")); sign.click(); String myWindowHan...

Using module 'subprocess' with timeout

Here's the Python code to run an arbitrary command returning its stdout data, or raise an exception on non-zero exit codes: proc = subprocess.Popen( cmd, stderr=subprocess.STDOUT, # Merge stdout and stderr stdout=subprocess.PIPE, sh...

AWS : The config profile (MyName) could not be found

Every time I want to config something with AWS I get the following error : "The config profile (myname) could not be found" like : aws configure I'm using Python 3.4 and I want to use AWS CLI Keyring to encrypt my credentials.. ...

Sum values in foreach loop php

foreach($group as $key=>$value) { echo $key. " = " .$value. "<br>"; } For example: doc1 = 8 doc2 = 7 doc3 = 1 I want to count $value, so the result is 8+7+1 = 16. What should i do? Thanks....

launch sms application with an intent

I have a question about an intent... I try to launch the sms app... Intent intent = new Intent(Intent.ACTION_MAIN); intent.setType("vnd.android-dir/mms-sms"); int flags = Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.F...

How to create a JQuery Clock / Timer

I have a simple quiz application and I want display a nice timer / clock at the top of the page which shows the user how long they've been going for. (If I could somehow show them a timer for Total Quiz Time and also a second one for This Question Ti...

How to execute a file within the python interpreter?

I'm trying to execute a file with python commands from within the interpreter. EDIT: I'm trying to use variables and settings from that file, not to invoke a separate process....

Can "git pull --all" update all my local branches?

I often have at least 3 remote branches: master, staging and production. I have 3 local branches that track those remote branches. Updating all my local branches is tedious: git fetch --all git rebase origin/master git checkout staging git rebase o...

SQL get the last date time record

I'm trying to get the last datetime record from a table that happens to store multiple status. My table looks like so: +---------+------------------------+-------+ |filename |Dates |Status | +---------+------------------------+----...

How to add hours to current time in python

I am able to get the current time as below: from datetime import datetime str(datetime.now())[11:19] Result '19:43:20' Now, i am trying to add 9 hours to the above time, how can I add hours to current time in Python?...

Angular: date filter adds timezone, how to output UTC?

I'm using the date filter to render a unix timestamp in a certain format. I've noticed the filter adds the local timezone to the output. Is there any way to simply output the exact timestamp, without adding any timezone information? Input: talk.co...

Setting an environment variable before a command in Bash is not working for the second command in a pipe

In a given shell, normally I'd set a variable or variables and then run a command. Recently I learned about the concept of prepending a variable definition to a command: FOO=bar somecommand someargs This works... kind of. It doesn't work when you'...

How to get element-wise matrix multiplication (Hadamard product) in numpy?

I have two matrices a = np.matrix([[1,2], [3,4]]) b = np.matrix([[5,6], [7,8]]) and I want to get the element-wise product, [[1*5,2*6], [3*7,4*8]], equaling [[5,12], [21,32]] I have tried print(np.dot(a,b)) and print(a*b) but both give ...

How to use andWhere and orWhere in Doctrine?

WHERE a = 1 AND (b = 1 Or b = 2) AND (c = 1 OR c = 2) How can i make this in Doctrine? $q->where("a = 1"); $q->andWhere("b = 1") $q->orWhere("b = 2") $q->andWhere("c = 1") $q->orWhere("d = 2") this isnt correctly... Should be: $q...

ArrayBuffer to base64 encoded string

I need an efficient (read native) way to convert an ArrayBuffer to a base64 string which needs to be used on a multipart post. ...

How to Sort Multi-dimensional Array by Value?

How can I sort this array by the value of the "order" key? Even though the values are currently sequential, they will not always be. Array ( [0] => Array ( [hashtag] => a7e87329b5eab8578f4f1098a152d6f4 [titl...

Load CSV file with Spark

I'm new to Spark and I'm trying to read CSV data from a file with Spark. Here's what I am doing : sc.textFile('file.csv') .map(lambda line: (line.split(',')[0], line.split(',')[1])) .collect() I would expect this call to give me a list of ...

pip install fails with "connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)"

I am very new to Python and trying to > pip install linkchecker on Windows 7. Some notes: pip install is failing no matter the package. For example, > pip install scrapy also results in the SSL error. Vanilla install of Python 3.4.1 included ...

regular expression: match any word until first space

I have the following line: hshd household 8/29/2007 LB I want to match anything that comes before the first space (whitespace). So, in this case, I want to get back hshd ...

In nodeJs is there a way to loop through an array without using array size?

Let's say I have myArray = ['item1', 'item2'] I tried for (var item in myArray) {console.log(item)} It prints 0 1 What I wish is to have item1 item2 Is there any other syntax that works without using for (var i = 0; i <...

The name 'ConfigurationManager' does not exist in the current context

I am trying to access connectionStrings from the config file. The code is ASP.NET + C#. I have added System.Configuration to reference and also mentioned with using. But still it wouldn't accept the assembly. I am using VSTS 2008. Any idea what coul...

How do I remove an object from an array with JavaScript?

I have an JavaScript object like this: id="1"; name = "serdar"; and I have an Array which contains many objects of above. How can I remove an object from that array such as like that: obj[1].remove(); ...

BeautifulSoup getText from between <p>, not picking up subsequent paragraphs

Firstly, I am a complete newbie when it comes to Python. However, I have written a piece of code to look at an RSS feed, open the link and extract the text from the article. This is what I have so far: from BeautifulSoup import BeautifulSoup import ...

filtering NSArray into a new NSArray in Objective-C

I have an NSArray and I'd like to create a new NSArray with objects from the original array that meet certain criteria. The criteria is decided by a function that returns a BOOL. I can create an NSMutableArray, iterate through the source array and c...

SELECT * FROM multiple tables. MySQL

SELECT name, price, photo FROM drinks, drinks_photos WHERE drinks.id = drinks_id yeilds 5 rows (5 arrays), photo is the only unique field in a row. name, price get repeated (here, fanta- name, price repeat 3 times.) How do i get rid of these dupl...

Changing an element's ID with jQuery

I need to change an element's ID using jQuery. Apparently these don't work: jQuery(this).prev("li").attr("id")="newid" jQuery(this).prev("li")="newid" I found out that I can make it happen with the following code: jQuery(this).prev("li")show(f...

Jquery in React is not defined

Hi I just want to receive ajax request, but the problem is that jquery is not defined in React. React version is 14.0 Error message Uncaught ReferenceError: $ is not defined I have two files : index.js import React from 'react'; import { rend...

How can I comment a single line in XML?

This rather is a verification just not to miss out. Is/n't there a line-comment in XML? So, one without a closer, like "//" the compiler uses. I saw How do I comment out a block of tags in XML? and several other discussions. This type of comment w...

Copy all the lines to clipboard

Is there any way to copy all lines from open file to clipboard in VI editor. I tried yG but it's not using clipboard to store those lines. So is it possible?...

Angular 2 Date Input not binding to date value

trying to get a form set up but for some reason, the Date input in my html is not binding to the object's date value, despite using [(ngModel)] html: <input type='date' #myDate [(ngModel)]='demoUser.date'/><br> form component: export...

How to downgrade Xcode to previous version?

I have to use Xcode occasionally, and have now come across a problem where I've upgraded to Xcode 4.6, but another piece of software I'm using doesn't support it, so I need to go back to Xcode 4.5. I'm not used to the way Macs work in general, so if...

COALESCE with Hive SQL

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Importing data from a JSON file into R

Is there a way to import data from a JSON file into R? More specifically, the file is an array of JSON objects with string fields, objects, and arrays. The RJSON Package isn't very clear on how to deal with this http://cran.r-project.org/web/packages...

Convert file to byte array and vice versa

I've found many ways of converting a file to a byte array and writing byte array to a file on storage. What I want is to convert java.io.File to a byte array and then convert a byte array back to a java.io.File. I don't want to write it out to sto...

Best way to do multiple constructors in PHP

You can't put two __construct functions with unique argument signatures in a PHP class. I'd like to do this: class Student { protected $id; protected $name; // etc. public function __construct($id){ $this->id = $id; // ...

powershell is missing the terminator: "

I have the following script code #[string]$password = $( Read-Host "Input password, please" ) param ( [string]$ReleaseFile = $(throw "-ReleaseFile is required"), [string]$Destination = $(throw "-Destination is required") ...

What's the difference between abstraction and encapsulation?

In interviews I have been asked to explain the difference between abstraction and encapsulation. My answer has been along the lines of Abstraction allows us to represent complex real world in simplest manner. It is the process of identifying the r...

Combine two pandas Data Frames (join on a common column)

I have 2 dataframes: restaurant_ids_dataframe Data columns (total 13 columns): business_id 4503 non-null values categories 4503 non-null values city 4503 non-null values full_address 4503 non-null values latitude ...

How to revert the last migration?

I've made a migration that added a new table and want to revert it and delete the migration, without creating a new migration. How do I do it? Is there a command to revert last migration and then I can simply delete the migration file?...

Combination of async function + await + setTimeout

I am trying to use the new async features and I hope solving my problem will help others in the future. This is my code which is working: async function asyncGenerator() { // other code while (goOn) { // other code var fileList...

Android Layout Right Align

I have the following layout in place <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_he...

Define variable to use with IN operator (T-SQL)

I have a Transact-SQL query that uses the IN operator. Something like this: select * from myTable where myColumn in (1,2,3,4) Is there a way to define a variable to hold the entire list "(1,2,3,4)"? How should I define it? declare @myList {data t...

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I have seen C++ code saved as both .cc and .cpp files. Is there a difference between the two? The Google style guide seems to suggest .cc, but provides no explanation. I am mainly concerned with programs on Linux systems....

how to cancel/abort ajax request in axios

I use axios for ajax requests and reactJS + flux for render UI. In my app there is third side timeline (reactJS component). Timeline can be managed by mouse's scroll. App sends ajax request for the actual data after any scroll event. Problem that pro...

What's the difference between select_related and prefetch_related in Django ORM?

In Django doc, select_related() "follows" foreign-key relationships, selecting additional related-object data when it executes its query. prefetch_related() does a separate lookup for each relationship, and does the "joining" in ...

VSCode: How to Split Editor Vertically

In Visual Studio code, a while ago, when I used View->Split Editor, it would split vertically. (One file on the left and one file on the right.) I updated Visual Studio Code and when when I do View->Split Editor, it always splits horizontally. (One ...

Is "else if" faster than "switch() case"?

I'm an ex Pascal guy, currently learning C#. My question is the following: Is the code below faster than making a switch? int a = 5; if (a == 1) { .... } else if(a == 2) { .... } else if(a == 3) { .... } else if(a == 4) { .... } el...

Install Windows Service created in Visual Studio

When I create a new Windows Service in Visual Studio 2010, I get the message stating to use InstallUtil and net start to run the service. I have tried the following steps: Create new project File -> New -> Project -> Windows Service Project Name: ...

How can I write these variables into one line of code in C#?

I am new to C#, literally on page 50, and i am curious as to how to write these variables in one line of code: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace consoleHelloWorld { class Program ...

Check if a String is in an ArrayList of Strings

How can I check if a String is there in the List? I want to assign 1 to temp if there is a result, 2 otherwise. My current code is: Integer temp = 0; List<String> bankAccNos = new ArrayList<String>();//assume list contains values Strin...

How to check if a column exists in a SQL Server table?

I need to add a specific column if it does not exist. I have something like the following, but it always returns false: IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'myTableName' AND C...

Error Code 1292 - Truncated incorrect DOUBLE value - Mysql

I am not sure what is this error! #1292 - Truncated incorrect DOUBLE value: I don't have double value field or data! I have wasted a whole hour trying to figure this out! here is my query INSERT INTO call_managment_system.contact_numbers ...

How to pass parameters or arguments into a gradle task

I have a gradle build script into which I am trying to include Eric Wendelin's css plugin - http://eriwen.github.io/gradle-css-plugin/ Its easy enough to implement, and because I only want minification (rather than combining and gzipping), I've got ...

How to adjust an UIButton's imageSize?

How can I adjust the image size of the UIButton? I am setting the image like this: [myLikesButton setImage:[UIImage imageNamed:@"icon-heart.png"] forState:UIControlStateNormal]; However this fills up the image to the full button, how do I make the...

How to initialize std::vector from C-style array?

What is the cheapest way to initialize a std::vector from a C-style array? Example: In the following class, I have a vector, but due to outside restrictions, the data will be passed in as C-style array: class Foo { std::vector<double> w_; p...

What permission do I need to access Internet from an Android application?

I get the following Exception running my app: java.net.SocketException: Permission denied (maybe missing INTERNET permission) How do I solve the missing permission problem?...

In MySQL, can I copy one row to insert into the same table?

insert into table select * from table where primarykey=1 I just want to copy one row to insert into the same table (i.e., I want to duplicate an existing row in the table) but I want to do this without having to list all the columns after the "sele...

Use Mockito to mock some methods but not others

Is there any way, using Mockito, to mock some methods in a class, but not others? For example, in this (admittedly contrived) Stock class I want to mock the getPrice() and getQuantity() return values (as shown in the test snippet below) but I want t...

Windows cannot find 'http:/.127.0.0.1:%HTTPPORT%/apex/f?p=4950'. Make sure you typed the name correctly, and then try again

I am trying to install Oracle Express 11g, after I download the zip file OracleXE112_Win64 - I unzip it, and open Disk 1 then setup. I go through the entire installation process without any problems. However when I go to open "Get Started" I come acr...

Set width to match constraints in ConstraintLayout

I would like to constrain a View's left and right sides to it's parent view's margins and make it fill the allotted space. However, setting width to either match_parent or wrap_content appears to produce the same result. Is there something equivalen...

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I'm looking to see how to do two things in Seaborn with using a bar chart to display values that are in the dataframe, but not in the graph 1) I'm looking to display the values of one field in a dataframe while graphing another. For example, below,...

How do you use String.substringWithRange? (or, how do Ranges work in Swift?)

I have not yet been able to figure out how to get a substring of a String in Swift: var str = “Hello, playground” func test(str: String) -> String { return str.substringWithRange( /* What goes here? */ ) } test (str) I'm not able to create...

Get response from PHP file using AJAX

So here's my issue, I am using AJAX (jQuery) to post a form to process.php but the page actually needs to echo out a response such as apple or plum. I'm not sure how to take the response from process.php and have it stored as a variable... Here's th...

Formatting a number with leading zeros in PHP

I have a variable which contains the value 1234567. I would like it to contain exactly 8 digits, i.e. 01234567. Is there a PHP function for that?...

NewtonSoft.Json Serialize and Deserialize class with property of type IEnumerable<ISomeInterface>

I am trying to move some code to consume ASP.NET MVC Web API generated Json data instead of SOAP Xml. I have run into a problem with serializing and deserializing properties of type: IEnumerable<ISomeInterface>. Here is a simple example: p...

How do I make a placeholder for a 'select' box?

I'm using placeholders for text inputs which is working out just fine. But I'd like to use a placeholder for my selectboxes as well. Of course I can just use this code: <select> <option value="">Select your option</option> ...

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I'm having trouble adding a line break in SSRS 2008. I've tried all of these different ways but nothing is doing it. "+ chr(10) +" , "& chr(10) &" , "& chr(13) & chr(10) &" , "& vbcrlf &" , "+ vbcrlf +" , "Environment.Ne...

How to pass values between Fragments

I am pretty new to using Fragments. I am just trying to build a simple sample application that uses Fragments. My scenario is, I have two activities with one fragment inside each activity. The first fragment has an edittext and a button. The second ...

How to Solve Max Connection Pool Error

I have a application in asp.net 3.5 and Database is Sql server 2005. "Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size wa...

How to urlencode a querystring in Python?

I am trying to urlencode this string before I submit. queryString = 'eventName=' + evt.fields["eventName"] + '&' + 'eventDescription=' + evt.fields["eventDescription"]; ...

How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)?

How can I tell if the JVM in which my application runs is 32 bit or 64-bit? Specifically, what functions or properties I can used to detect this within the program?...

How to restart a rails server on Heroku?

Locally I just interrupt (ctrl-c) and then start it again. How do I do the same thing with an app on heroku?...

Count Vowels in String Python

I'm trying to count how many occurrences there are of specific characters in a string, but the output is wrong. Here is my code: inputString = str(input("Please type a sentence: ")) a = "a" A = "A" e = "e" E = "E" i = "i" I = "I" o = "o" O = "O" u ...

Checking if a website is up via Python

By using python, how can I check if a website is up? From what I read, I need to check the "HTTP HEAD" and see status code "200 OK", but how to do so ? Cheers Related How do you send a HEAD HTTP request in Python? ...

How to create a fixed-size array of objects

In Swift, I am trying to create an array of 64 SKSpriteNode. I want first to initialize it empty, then I would put Sprites in the first 16 cells, and the last 16 cells (simulating an chess game). From what I understood in the doc, I would have expec...

Java properties UTF-8 encoding in Eclipse

I've recently had to switch encoding of webapp I'm working on from ISO-xx to utf8. Everything went smooth, except properties files. I added -Dfile.encoding=UTF-8 in eclipse.ini and normal files work fine. Properties however show some strange behaviou...

Is there an equivalent to the SUBSTRING function in MS Access SQL?

I want to do something like this within an MS Access query, but SUBSTRING is an undefined function. SELECT DISTINCT SUBSTRING(LastName, 1, 1) FROM Authors; ...

How to do a num_rows() on COUNT query in codeigniter?

This works: $sql = "SELECT id FROM `users` WHERE `account_status` = '" . $i . "'"; $query = $this->db->query($sql); var_dump($query->num_rows()); But this doesn't: $sql = "...

JavaScript equivalent of PHP’s die

Is there something like "die" in JavaScript? I've tried with "break", but doesn't work :)...

Facebook share link without JavaScript

The following link is for sharing a page on Twitter: http://twitter.com/share Is there a similar option for Facebook that doesn't require JavaScript? I know about http://facebook.com/sharer.php, but that requires a get parameter to be inserted man...

How do I return a char array from a function?

I've tried the following: char[10] testfunc() { char[10] str; return str; } ...

Excluding directory when creating a .tar.gz file

I have a /public_html/ folder, in that folder there's a /tmp/ folder that has like 70gb of files I don't really need. Now I am trying to create a .tar.gz of /public_html/ excluding /tmp/ This is the command I ran: tar -pczf MyBackup.tar.gz /home/u...

Pass value to iframe from a window

I need to send a value to an iframe. The iframe is present within the current window. How can I achieve this? I need to do it with javascript in the parent window that contains the iframe....

Set start value for column with autoincrement

I have a table Orders with the following fields: Id | SubTotal | Tax | Shipping | DateCreated The Id column is set to autoincrement(1,1). This is to be used in an E-commerce storefront. Sometimes a current E-commerce store is migrated to my pl...

How to get input textfield values when enter key is pressed in react js?

I want to pass textfield values when user press enter key from keyboard. In onChange() event, I am getting the value of the textbox, but How to get this value when enter key is pressed ? Code: import TextField from 'material-ui/TextField'; class ...

How organize uploaded media in WP?

I am new in WordPress and I came from Joomla. How can I (if I can do it...) organize the uploaded media into folder and subfolder using WordPress? If I go in my backend administration panel I have the Media sub panel in which I can add a file (for e...

How to receive JSON as an MVC 5 action method parameter

I have been trying the whole afternoon crawling through the web trying to receive a JSON object in the action controller. What is the correct and or easier way to go about doing it? I have tried the following: 1: //Post/ Roles/AddUser [HttpPost] p...

How to get input text value on click in ReactJS

I am learning ReactJS and I want to understand how to get the input text values in ReactJS using simple onclick event. I have followed there tutorial and although i am able to get the parameter of text input. But somehow i am not able to get its valu...

How to get ER model of database from server with Workbench

Is there any way to get an ER model of a database from the server that is connected to my MySQL Workbench?...

How to extract text from a string using sed?

My example string is as follows: This is 02G05 a test string 20-Jul-2012 Now from the above string I want to extract 02G05. For that I tried the following regex with sed $ echo "This is 02G05 a test string 20-Jul-2012" | sed -n '/\d+G\d+/p' But...

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I've done a few researches on this topic and I couldn't find a complete solution so, step by step and with some trial and error, I finally find out how can we achieve these results: having a transparent or coloured Actionbar and Statusbar. See my an...

CSS: how to add white space before element's content?

None of the following code works : p:before { content: " "; } p:before { content: " "; } How do I add white space before element's content ? Note: I need to color the border-left and the margin-left for semantic use and use the space as...

Python RuntimeWarning: overflow encountered in long scalars

I am new to programming. In my latest Python 2.7 project I encountered the following: RuntimeWarning: overflow encountered in long_scalars Could someone please elaborate what this means and what I could do to fix that? The code runs through, b...

How to fix "'System.AggregateException' occurred in mscorlib.dll"

I'm receiving an unhandled exception while debugging, and the program stops executing. The debugger doesn't show me the line so I don't know what to fix. An unhandled exception of type 'System.AggregateException' occurred in mscorlib.dll Add...

Get generic type of class at runtime

How can I achieve this? public class GenericClass<T> { public Type getMyType() { //How do I return the type of T? } } Everything I have tried so far always returns type Object rather than the specific type used....

Git: How to remove proxy

I am trying to push to my repo but receiving an error: fatal: unable to access 'https://github.com/myrepo.git/': Could not resolve proxy: --list I already changed the proxy settings : git config --global --unset http.proxy my global c...

Running interactive commands in Paramiko

I'm trying to run an interactive command through paramiko. The cmd execution tries to prompt for a password but I do not know how to supply the password through paramiko's exec_command and the execution hangs. Is there a way to send values to the t...

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So I have seen quite a few ways to darken images with CSS, including ones with rounded corners, but my problem is different. Let's say I have an .png image that looks like a little dog (just go with it, I don't have any good examples), when I place ...

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Where do I download JDBC drivers for DB2 that are compatible with JDK 1.5? They seem to be very elusive and I hit many dead-ends at IBM's website. I managed to find versions of the driver bundled with some tools such as IBM Data Studio. Unfortunately...

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I have a table consisting of a header row and a couple of data rows. What I want to do is to create a blank row in between the header and the data rows, but I want this blank row to be smaller in height than the other rows (so that there isn't such a...

How to print the data in byte array as characters?

In my byte array I have the hash values of a message which consists of some negative values and also positive values. Positive values are being printed easily by using the (char)byte[i] statement. Now how can I get the negative value?...

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I know there are a lot of posts about this, but I couldn´t get it to work. I use tabs for coding. Is there a way, to convert always spaces to tabs? I.e. on open and on Save files? Anyone got an idea? // edit: My desire is to do this automatically! ...

ConvergenceWarning: Liblinear failed to converge, increase the number of iterations

Running the code of linear binary pattern for Adrian. This program runs but gives the following warning: C:\Python27\lib\site-packages\sklearn\svm\base.py:922: ConvergenceWarning: Liblinear failed to converge, increase the number of iterations. "t...

instanceof Vs getClass( )

I see gain in performance when using getClass() and == operator over instanceOf operator. Object str = new Integer("2000"); long starttime = System.nanoTime(); if(str instanceof String) { System.out.println("its string"); } else { if (str...

Android Studio says "cannot resolve symbol" but project compiles

I'm importing twitter4j in AndroidStudio, using the following in my build.gradle: dependencies { compile 'com.android.support:support-v4:18.0.+' compile files('libs/twitter4j-core-3.0.4.jar') } The project compiles fine, and I can create twitt...

How to put a List<class> into a JSONObject and then read that object?

I have a List<class> that I would like to convert into a json object and then traverse the data out of the json object. If this were just a list<String> I could just do something like: JSONObject obj = new JSONObject(); List<String...

javascript code to check special characters

I have JavaScript code to check if special characters are in a string. The code works fine in Firefox, but not in Chrome. In Chrome, even if the string does not contain special characters, it says it contains special characters. var iChars = "~`!#$%...

Ruby: Calling class method from instance

In Ruby, how do you call a class method from one of that class's instances? Say I have class Truck def self.default_make # Class method. "mac" end def initialize # Instance method. Truck.default_make # gets the default via th...

Using PHP variables inside HTML tags?

I am pretty new to php but I'm stuck on this problem... Say i wait to put a link to another site with a given parameter, how do I do it correclty? This is what i have now: <html> <body> <?php $param = "test"; echo "<a href="h...

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I am new to Elasticearch, and I have been trying for 2 days to insert some data into Elasticearch. I found on Google that there are many pages to help to create an index (I am not clear about "index", does it mean "insert" in other terms?) Then many ...

Create a menu Bar in WPF?

I want to create a menu bar identical to the one in windows forms in my WPF application. How would I do this? The menu option in the WPF controls toolbox only gives a blank bar....

PyCharm shows unresolved references error for valid code

I am using PyCharm to work on a project. The project is opened and configured with an interpreter, and can run successfully. The remote interpreter paths are mapped properly. This seems to be the correct configuration, but PyCharm is highlighting ...

How do I add a Maven dependency in Eclipse?

I don't know how to use Maven at all. I've been developing for a couple years with Eclipse and haven't yet needed to know about it. However, now I'm looking at some docs that suggest I do the following: "To include it within your project, just ad...

AJAX post error : Refused to set unsafe header "Connection"

I have the following custom ajax function that posts data back to a PHP file. Everytime the post of data happens I get the following two errors : Refused to set unsafe header "Content-length" Refused to set unsafe header "Connection" Code : ...

How to load images dynamically (or lazily) when users scrolls them into view

I've noticed this in numerous "modern" websites (e.g. facebook and google image search) where the images below the fold load only when user scrolls down the page enough to bring them inside the visible viewport region (upon view source, the page show...

"ArrayAdapter requires the resource ID to be a TextView" xml problems

I am getting an error when trying to set my view to display the ListView for the file I want to display(text file). I am pretty sure it has something to do with the xml. I just want to display the information from this.file = fileop.ReadFileAsList("I...

How to resolve a Java Rounding Double issue

Seems like the subtraction is triggering some kind of issue and the resulting value is wrong. double tempCommission = targetPremium.doubleValue()*rate.doubleValue()/100d; 78.75 = 787.5 * 10.0/100d double netToCompany = targetPremium.doubleValue()...

C++: variable 'std::ifstream ifs' has initializer but incomplete type

Sorry if this is pretty noobish, but I'm pretty new to C++. I'm trying to open a file and read it using ifstream: vector<string> load_f(string file) { vector<string> text; ifstream ifs(file); string buffer, str_line; int bracke...

CSS Change List Item Background Color with Class

I am trying to change the background color of one list item while there is another background color for other list items. This is what I have: _x000D_ _x000D_ <style type="text/css">_x000D_ _x000D_ ul.nav li_x000D_ {_x000D_ display:inli...

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I'm not sure what's going wrong here. I was just following a tutorial online and these errors popped up. I'm getting the following errors Error Notice: Undefined variable: db in C:\xampp\htdocs\wisconsindairyfarmers\admin\login.php on line 7 Fata...

How do I get list of methods in a Python class?

I want to iterate through the methods in a class, or handle class or instance objects differently based on the methods present. How do I get a list of class methods? Also see: How can I list the methods in a Python 2.5 module? Looping over a Pyth...

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I have a method that uses an IList<T> as a parameter. I need to check what the type of that T object is and do something based on it. I was trying to use the T value, but the compiler does not not allow it. My solution is the following: pri...

Any way (or shortcut) to auto import the classes in IntelliJ IDEA like in Eclipse?

In Eclipse, while coding in Java and press Ctrl + Shift + O auto import all the Classes automatically. In NetBeans, this is done with Ctrl + Shift + I. Is any way to do this in IntelliJ IDEA? I searched an equivalent shortcut in google, StackOverfl...

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How can I display HTML text in textview? For example, string <h1>Krupal testing <span style="font-weight: bold;">Customer WYWO</span></h1> Suppose text is bold so it display in textview as b...

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What does it mean when JavaScript network calls such as fetch or XMLHttpRequest, or any other type of HTTP network request, fail with an HTTP status code of 0? This doesn't seem to be a valid HTTP status code as other codes are three digits in HTTP ...

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I have a repository in Git. I made a branch, then did some changes both to the master and to the branch. Then, tens of commits later, I realized the branch is in much better state than the master, so I want the branch to "become" the master and disr...

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I know there are some questions that address this, but the answers usually follow along the lines of recommending a Dictionary or Collection of parameters, which doesn't work in my situation. I am using a library that works through reflection to do ...

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I'm working on a shell script that does certain changes on a txt file only if it does exist, however this test loop doesn't work, I wonder why? Thank you! while [ ! -f /tmp/list.txt ] ; do sleep 2 done ...

In Python, how do you convert seconds since epoch to a `datetime` object?

The time module can be initialized using seconds since epoch: >>> import time >>> t1=time.gmtime(1284286794) >>> t1 time.struct_time(tm_year=2010, tm_mon=9, tm_mday=12, tm_hour=10, tm_min=19, tm_sec=54, t...

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I have some code and when it executes, it throws a IndexOutOfRangeException, saying, Index was outside the bounds of the array. What does this mean, and what can I do about it? Depending on classes used it can also be ArgumentOutOfRangeExcept...

How do I initialize Kotlin's MutableList to empty MutableList?

Seems so simple, but, how do I initialize Kotlin's MutableList to empty MutableList? I could hack it this way, but I'm sure there is something easier available: var pusta: List<Kolory> = emptyList() var cos: MutableList<Kolory> = pusta....

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I have a peculiar and frustrating problem. For the simple markup: <table> <thead> <tr><th>1</th><th>2</th><th>3</th></tr> </thead> <tbody> <tr>...

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I am stuck when I have generated a set of data and tried to color the plot line in python. For example I would like to change the line color from blue to black here. This is what I have and returns is the set of data that I got from pandas. ax=pl...

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I'm teaching myself Python and was just "exploring". Google says that datetime is a global variable but when I try to find todays date in the terminal I receive the NameError in the question title? mynames-MacBook:pythonhard myname$ python Enthought...

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I've been running a script on jupyter notebooks for about 26 hour; I haven't really been using my computer for anything else, but it needs to run this program that will take ~30 hours to complete. At about 21 hours in, it stopped saving and my termin...

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I've got a folder: c:\test I'm trying this code: File.Move(@"c:\test\SomeFile.txt", @"c:\test\Test"); I get exception: File already exists The output directory definitely exists and the input file is there....

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I'll soon be working on a large c# project and would like to build in multi-language support from the start. I've had a play around and can get it working using a separate resource file for each language, then use a resource manager to load up the st...

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I have a MySQL stored procedure where I find the max value from a table. If there is no value I want to set the variable to yesterday's date. DECLARE current_procedure_name CHAR(60) DEFAULT 'accounts_general'; DECLARE last_run_time datetime DEFAUL...

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Is there a modulo function in the Python math library? Isn't 15 % 4, 3? But 15 mod 4 is 1, right?...

Java: How to read a text file

I want to read a text file containing space separated values. Values are integers. How can I read it and put it in an array list? Here is an example of contents of the text file: 1 62 4 55 5 6 77 I want to have it in an arraylist as [1, 62, 4, 55...

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I installed Laravel 5.0 properly by cloning in git, and composer install, when I ran it to browser http://localhost/laravel/public/, it says "Whoops, looks like something went wrong." I did not make any changes after composer install. Update a...

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I have a string like: "super exemple of string key : text I want to keep - end of my string" I want to just keep the string which is between "key : " and " - ". How can I do that? Must I use a Regex or can I do it in another way?...

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It is quite simple to run a Unix command from Java. Runtime.getRuntime().exec(myCommand); But is it possible to run a Unix shell script from Java code? If yes, would it be a good practice to run a shell script from within Java code?...

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