JQuery - $ is not defined
I have a simple jquery click event ``` <script type="text/javascript"> $(function() { $('#post').click(function() { alert("test"); }); }); </script> ``` and a jqu...
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- 15 Oct at 06:26
"Notice: Undefined variable", "Notice: Undefined index", "Warning: Undefined array key", and "Notice: Undefined offset" using PHP
I'm running a PHP script and continue to receive errors like: > Notice: Undefined variable: my_variable_name in C:\wamp\www\mypath\index.php on line 10Notice: Undefined index: my_index C:\wamp\www\myp...
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- 24 Feb at 13:1
How to create an array containing 1...N
I'm looking for any alternatives to the below for creating a JavaScript array containing 1 through to N where N is only known at runtime. ``` var foo = []; for (var i = 1; i <= N; i++) { foo.push(...
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- 26 May at 08:19
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in range(128)
I'm having problems dealing with unicode characters from text fetched from different web pages (on different sites). I am using BeautifulSoup. The problem is that the error is not always reproducibl...
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- 22 Mar at 13:59
What is __init__.py for?
What is [__init__.py](https://docs.python.org/3/tutorial/modules.html#packages) for in a Python source directory?
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- 1 Apr at 11:42
How to read a text file into a string variable and strip newlines?
I have a text file that looks like: ``` ABC DEF ``` How can I read the file into a single-line string without newlines, in this case creating a string `'ABCDEF'`? --- [How to read a file without n...
Get a list from Pandas DataFrame column headers
I want to get a list of the column headers from a Pandas DataFrame. The DataFrame will come from user input, so I won't know how many columns there will be or what they will be called. For example, i...
How do you display code snippets in MS Word preserving format and syntax highlighting?
Does anyone know a way to display code in Microsoft Word documents that preserves coloring and formatting? Preferably, the method would also be unobtrusive and easy to update. I have tried to include...
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- 29 Nov at 07:17
How do I style a <select> dropdown with only CSS?
Is there a CSS-only way to style a `<select>` dropdown? I need to style a `<select>` form as much as humanly possible, without any JavaScript. What are the properties I can use to do so in CSS? This...
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- 7 Sep at 19:15
How to convert a string to number in TypeScript?
Given a string representation of a number, how can I convert it to `number` type in TypeScript? ``` var numberString: string = "1234"; var numberValue: number = /* what should I do with `numberString...
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- 1 Jun at 21:30
How do I concatenate strings and variables in PowerShell?
Suppose I have the following snippet: ``` $assoc = New-Object PSObject -Property @{ Id = 42 Name = "Slim Shady" Owner = "Eminem" } Write-Host $assoc.Id + " - " + $assoc.Name + " - " ...
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- 27 Jun at 10:36
Which equals operator (== vs ===) should be used in JavaScript comparisons?
I'm using [JSLint](http://en.wikipedia.org/wiki/JSLint) to go through JavaScript, and it's returning many suggestions to replace `==` (two equals signs) with `===` (three equals signs) when doing thin...
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- 22 Mar at 16:13
How to add a browser tab icon (favicon) for a website?
I've been working on a website and I'd like to add a small icon to the browser tab. How can I do this in HTML and where in the code would I need to place it (e.g. header)? I have a `.png` logo file t...
Difference between "git add -A" and "git add ."
What is the difference between [git add [--all | -A]](https://git-scm.com/docs/git-add#Documentation/git-add.txt--A) and [git add .](https://git-scm.com/docs/git-add)?
Get the size of the screen, current web page and browser window
How can I get `windowWidth`, `windowHeight`, `pageWidth`, `pageHeight`, `screenWidth`, `screenHeight`, `pageX`, `pageY`, `screenX`, `screenY` which will work in all major browsers? ![screenshot descr...
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- 9 Jun at 09:2
How do I get list of all tables in a database using TSQL?
What is the best way to get the names of all of the tables in a specific database on SQL Server?
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- 7 Dec at 02:36
Removing duplicates in lists
How can I check if a list has any duplicates and return a new list without duplicates?
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- 11 Oct at 03:18
How to create a file in Linux from terminal window?
What's the easiest way to create a file in Linux terminal?
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- 27 Nov at 22:58
How do I recursively grep all directories and subdirectories?
How do I recursively `grep` all directories and subdirectories? ``` find . | xargs grep "texthere" * ```
Adding a directory to the PATH environment variable in Windows
I am trying to add `C:\xampp\php` to my system `PATH` environment variable in Windows. I have already added it using the dialog box. But when I type into my console: ``` C:\>path ``` it doesn't show...
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- 27 Jun at 16:45
Parse (split) a string in C++ using string delimiter (standard C++)
I am parsing a string in C++ using the following: ``` using namespace std; string parsed,input="text to be parsed"; stringstream input_stringstream(input); if (getline(input_stringstream,parsed,' '...
How do I comment out a block of tags in XML?
How do I comment out a block of tags in XML? I.e. How can I comment out `<staticText>` and everything inside it, in the code below? ``` <detail> <band height="20"> <staticText> <re...
jQuery disable/enable submit button
I have this HTML: ``` <input type="text" name="textField" /> <input type="submit" value="send" /> ``` How can I do something like this: - - - I tried something like this: ``` $(document).ready(...
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- 9 Jun at 21:23
What is a NullReferenceException, and how do I fix it?
I have some code and when it executes, it throws a `NullReferenceException`, saying: > Object reference not set to an instance of an object. What does this mean, and what can I do to fix this error?...
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- 3 Sep at 16:6
How can I update NodeJS and NPM to their latest versions?
### I just installed Node.js & NPM (Node Package Manager) I installed NPM for access to additional Modules. After I installed Node.js & NPM I noticed that neither were the latest versions availabl...
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- 25 Mar at 05:36