Questions

What does $_ mean in PowerShell?

I've seen the following a lot in PowerShell, but what does it do exactly? ``` $_ ```

1 Feb at 19:54

Remove file extension from a file name string

If I have a string saying `"abc.txt"`, is there a quick way to get a substring that is just `"abc"`? I can't do an `fileName.IndexOf('.')` because the file name could be `"abc.123.txt"` or something ...

12 Jan at 10:11

Display alert message and redirect after click on accept

I have a page with links to reports. Whenever somebody clicks on one report, they can download the excel file. However, sometimes there are no fields to make a report; in that case, I want to display ...

18 Jun at 10:53

How do I exit from the text window in Git?

I am using Windows and before committing, Git wants me to enter a text message and a new text window appears. ![screenshot](https://i.stack.imgur.com/DSfuw.png) How can I exit from this? I am try...

8 Feb at 08:23

CSS Animation onClick

How can I get a CSS Animation to play with a JavaScript onClick? I currently have: ``` .classname { -webkit-animation-name: cssAnimation; -webkit-animation-duration:3s; -webkit-animation-iterat...

14 Aug at 09:42

Signing a Windows EXE file

I have an [EXE](http://en.wikipedia.org/wiki/EXE) file that I should like to sign so that Windows will not warn the end user about an application from an "unknown publisher". I am not a Windows develo...

26 Jan at 14:42

How to get a certain element in a list, given the position?

So I've got a list: ``` list<Object> myList; myList.push_back(Object myObject); ``` I'm not sure but I'm confident that this would be the "0th" element in the array. Is there any function I can use...

23 Apr at 16:41

Shuffle an array with python, randomize array item order with python

What's the easiest way to shuffle an array with python?

28 Aug at 17:58

How can I decompress an archive file having .zst or tar.zst?

I do not know how I can decompress a file having .zst or tar.zst extension . The full filename :- file.pkg.tar.zst or file.xz.tar.zst

13 Sep at 00:18

How to find out if a file exists in C# / .NET?

I would like to test a string containing a path to a file for existence of that file (something like the `-e` test in Perl or the `os.path.exists()` in Python) in C#.

21 Dec at 10:46

Make function wait until element exists

I'm trying to add a canvas over another canvas – how can I make this function wait to start until the first canvas is created? ``` function PaintObject(brush) { this.started = false; // get...

16 Feb at 03:49

Android button with icon and text

I have some buttons like this in my app: ``` <Button android:id="@+id/bSearch" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding=...

How to fix a Div to top of page with CSS only

I am writing a glossary page. I have the alphabet links on the top of the page. I want to keep the top of the page (including the alphabet links) fixed, whilst the section of the page with the definit...

11 Aug at 20:58

How to use workbook.saveas with automatic Overwrite

In this section of code, Excel ALWAYS prompts: "File already exists, do you want to overwrite?" ``` Application.DisplayAlerts = False Set xls = CreateObject("Excel.Application") Set wb = xls.Workbook...

2 Jun at 08:51

Passing Objects By Reference or Value in C#

In C#, I have always thought that non-primitive variables were passed by reference and primitive values passed by value. So when passing to a method any non-primitive object, anything done to the obj...

Is there a way to force npm to generate package-lock.json?

I deleted it by accident and have made many changes to `package.json` since. An `npm install` or `npm update` do not generate `package-lock.json` anymore. I tried clearing my npm cache and my nvm cach...

10 Jun at 18:41

How to revert a "git rm -r ."?

I accidentely said `git rm -r .`. How do I recover from this? I did not commit. I think all files were marked for deletion and were also physically removed from my local checkout. I could (if I kn...

26 Feb at 12:12

Manually install Gradle and use it in Android Studio

I'm using Android Studio. How can I manually install and use `Gradle` within `Android Studio`. I've downloaded `Gradle` from [http://www.gradle.org/downloads](http://www.gradle.org/downloads) versio...

31 Mar at 19:42

What is the correct syntax of ng-include?

I’m trying to include an HTML snippet inside of an `ng-repeat`, but I can’t get the include to work. It seems the current syntax of `ng-include` is different than what it was previously: I see many ex...

Detect if an input has text in it using CSS -- on a page I am visiting and do not control?

Is there a way to detect whether or not an input has text in it via CSS? I've tried using the `:empty` pseudo-class, and I've tried using `[value=""]`, neither of which worked. I can't seem to find a ...

20 May at 08:12

How to resolve "Error: bad index – Fatal: index file corrupt" when using Git

After `git init`, I added and committed a few files, made some changes, added and committed. Set up the git daemon (running under Cygwin on WinXP) and cloned the repository once. Now, I get this erro...

23 Sep at 02:35

Combine two tables for one output

Say I have two tables: KnownHours: UnknownHours: I need to group these hours, ignoring Month, into a single data table so that my expected result is the following: I cannot seem to figure th...

30 Jan at 01:20

How to get a file or blob from an object URL?

I am allowing the user to load images into a page via drag&drop and other methods. When an image is dropped, I'm using `URL.createObjectURL` to convert to an object URL to display the image. I am no...

6 Feb at 14:48

Update .NET web service to use TLS 1.2

I need to use TLS 1.2 to connect from my .NET web service to another that is going to force TLS 1.2. I found a resource that said .NET 4.6 uses TLS 1.2 by default so that sounded like the easiest sol...

28 Jul at 20:53

How do I automatically scroll to the bottom of a multiline text box?

I have a textbox with the .Multiline property set to true. At regular intervals, I am adding new lines of text to it. I would like the textbox to automatically scroll to the bottom-most entry (the n...

22 May at 14:57