PowerShell equivalent to grep -f
I'm looking for the PowerShell equivalent to `grep --file=filename`. If you don't know `grep`, filename is a text file where each line has a regular expression pattern you want to match. Maybe I'm mi...
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- 8 Sep at 20:13
Difference between Divide and Conquer Algo and Dynamic Programming
What is the difference between Divide and Conquer Algorithms and Dynamic Programming Algorithms? How are the two terms different? I do not understand the difference between them. Please take a simple...
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- 4 Jul at 05:34
Correct way to pause a Python program
I've been using the `input` function as a way to pause my scripts: ``` print("something") wait = input("Press Enter to continue.") print("something") ``` Is there a formal way to do this?
callback to handle completion of pipe
I am using the following node.js code to download documents from some url and save it in the disk. I want to be informed about when the document is downloaded. i have not seen any callback with pipe.O...
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- 12 Jul at 08:31
Remote Debugging for Chrome iOS (and Safari)
With the recent release of Chrome for iOS, I was wondering how do you enable remote debugging for Chrome iOS? Update: With the release of iOS 6, remote debugging can now be done with .
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- 25 Aug at 15:33
How to set Java environment path in Ubuntu
I just installed JDK in Ubuntu with `sudo apt-get install openjdk-6-jdk` command, after the installation where's the Java `bin` directory located? And how can I set the environment path for that direc...
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- 29 Oct at 13:45
Select records from NOW() -1 Day
Is there a way in a MySQL statement to order records (through a date stamp) by >= NOW() -1 so all records from the day before today to the future are selected?
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- 2 Aug at 15:20
Convert String to System.IO.Stream
I need to convert a String to System.IO.Stream type to pass to another method. I tried this unsuccessfully. ``` Stream stream = new StringReader(contents); ```
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- 8 Nov at 07:13
Resource interpreted as Document but transferred with MIME type application/zip
With Chrome 12.0.742.112, if I redirect with the following headers: ``` HTTP/1.1 302 Found Location: http://0.0.0.0:3000/files/download.zip Content-Type: text/html; charset=utf-8 Cache-Control: no-c...
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- 24 Feb at 14:27
ModelState.AddModelError - How can I add an error that isn't for a property?
I am checking my database in `Create(FooViewModel fvm){...}` to see if the `fvm.prop1` and `fvm.prop2` already exist in that combination; if so, I want to add an error to the modelstate, then return t...
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- 19 Jul at 15:6
Mutex example / tutorial?
I was trying to understand how mutexes work. Did a lot of Googling but it still left some doubts of how it works because I created my own program in which locking didn't work. One absolutely non-intui...
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- 29 Dec at 01:22
How to efficiently remove all null elements from a ArrayList or String Array?
I try with a loop like that ``` // ArrayList tourists for (Tourist t : tourists) { if (t != null) { t.setId(idForm); } } ``` But it isn't nice. Can anyone suggest me a bette...
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- 15 Dec at 20:43
Rails get index of "each" loop
So I have this loop: ``` <% @images.each do |page| %> <% end %> ``` How would I get the index of "page" inside of the loop?
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- 27 Jan at 00:11
What is console.log and how do I use it?
> [What is console.log?](https://stackoverflow.com/questions/4539253/what-is-console-log) I see this line in a lot of jQuery scripts out there. I assume it's used for debug. Where can I see t...
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- 23 May at 11:46
What are "res" and "req" parameters in Express functions?
In the following Express function: ``` app.get('/user/:id', function(req, res){ res.send('user' + req.params.id); }); ``` What are `req` and `res`? What do they stand for, what do they mean, an...
C++ Double Address Operator? (&&)
I'm reading STL source code and I have no idea what `&&` address operator is supposed to do. Here is a code example from `stl_vector.h`: ``` vector& operator=(vector&& __x) // <-- Note double ampersa...
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- 19 Apr at 00:0
How do I allow HTTPS for Apache on localhost?
I was asked to set up HTTPS with a self-signed cert on Apache on localhost, but how do I actually do that? I have no idea at all.
How to remove new line characters from a string?
I have a string in the following format ``` string s = "This is a Test String.\n This is a next line.\t This is a tab.\n' ``` I want to remove all the occurrences of `\n` and `\r` from the string...
Calling startActivity() from outside of an Activity?
I'm using an `AlarmManager` to trigger an intent that broadcasts a signal. The following is my code: ``` AlarmManager mgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE); Intent i = new Inte...
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- 10 Jan at 11:54
Recreating a Dictionary from an IEnumerable<KeyValuePair<>>
I have a method that returns an `IEnumerable<KeyValuePair<string, ArrayList>>`, but some of the callers require the result of the method to be a dictionary. How can I convert the `IEnumerable<KeyValue...
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- 13 May at 09:18
How to assign the output of a Bash command to a variable?
I have a problem putting the content of `pwd` command into a shell variable that I'll use later. Here is my shell code (the loop doesn't stop): ``` #!/bin/bash pwd= `pwd` until [ $pwd = "/" ] d...
SQL Server: Filter output of sp_who2
Under SQL Server, is there an easy way to filter the output of sp_who2? Say I wanted to just show rows for a certain database, for example.
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- 15 Jun at 02:22
Check if property has attribute
Given a property in a class, with attributes - what is the fastest way to determine if it contains a given attribute? For example: ``` [IsNotNullable] [IsPK] [IsIdentity] [SequenceNameAtt...
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- 12 Jan at 17:44
How to make a <div> always full screen?
No matter how its content is like. Is it possible to do this?
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- 15 Nov at 02:5
SQL Server 2008 can't login with newly created user
I'm using using Windows Vista and I'm having trouble logging in with a newly created user. 1. I open SQL Server Management Studio. 2. I create a new Login by right-clicking on Security->Logins. Chec...
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- 15 Apr at 22:25