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  • What are the standard practices for throwing Javascript Exceptions?

    - by T.R.
    w3schools says that exceptions can be strings, integers, booleans, or objects, but the example given doesn't strike me as good practice, since exception type checking is done through string comparison. Is this the preferred method of exception handling in Javascript? Are there built-in exception types (like NullPointerException)? (if so, what are they, what kind of inheritance do they use, and are they preferred over other options?)

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  • Set generic iptables rules?

    - by tftd
    This may be a really dumb question but how can you open a port on multiple interfaces without defining the interfaces? For example how do I open port 22 on all interfaces? On my machine I have some interfaces that are dynamic and may or may not be available so I have to set "generic" rules. This code is not working for me but I can't figure out why: # My default policy is to drop the input. # The other policies are required like that. $IPTABLES -P INPUT DROP $IPTABLES -P OUTPUT ACCEPT $IPTABLES -P FORWARD ACCEPT $IPTABLES -t nat -P POSTROUTING ACCEPT $IPTABLES -t nat -P PREROUTING ACCEPT $IPTABLES -t mangle -P OUTPUT ACCEPT $IPTABLES -t mangle -P PREROUTING ACCEPT #Open port 22 on all interfaces ? $IPTABLES -A INPUT -p tcp --dport 22 -j ACCEPT So apparently there's something wrong with the last line... but I can't see it?

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  • URL structure preference - to slash or not to slash?

    - by TheDeadMedic
    I'm using custom post types in WordPress 3.0 to manage 'courses' (or seminars, lectures, whatever term you'd prefer to have in mind). Now for viewing a single 'course', the url structure is; /course/course-name/ But for multiple courses? /courses/category/category-name/ Or... /course-category/category-name/ Or something entirely different?

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  • How to list all files in a repository in Mercurial (hg)?

    - by JamesWampler
    Is there a command in mercurial that will list all files currently under source control? I can do a dir /s to list all files in my folder and subfolders, but I have no idea which have been added to my repository. I have a variety of excluded file types and folders and I want verify that none of them were added before I set them up in my .hgignore file.

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  • Actionscript flex: Converting # colors to uint

    - by Daryl
    I'm working with several components that take color as a uint, but the colors I have are in the format of "#161616". I'm not sure what the relation between the 2 types of colors are or how to go from one to another. It doesn't have to be an actionscript solution. I have only a small number of these colors, so can be done manually too.

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  • Scala Unit type

    - by portoalet
    I use opencsv to parse csv files, and my code is while( (line = reader.readNext()) != null ) { .... } I got a compiler warning saying: comparing values of types Unit and Null using `!=' will always yield true [warn] while( (aLine = reader.readNext()) != null ) { How should I do the while loop?

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  • C++: How to require that one template type is derived from the other

    - by Will
    In a comparison operator: template<class R1, class R2> bool operator==(Manager<R1> m1, Manager<R2> m2) { return m1.internal_field == m2.internal_field; } Is there any way I could enforce that R1 and R2 must have a supertype or subtype relation? That is, I'd like to allow either R1 to be derived from R2, or R2 to be derived from R1, but disallow the comparison if R1 and R2 are unrelated types.

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  • Raise differing beeps

    - by themaninthesuitcase
    I need to be able to raise different types of audio notifications to the user. I need an "ok" and an "error" type sounds, I was hoping to be able to raise a simple beep and a critical stop type sound but I can only find the Beep() command which doesn't allow for differing sounds. Is there a library that does what I need or will I need to roll my own using the system wavs.

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  • Can you call Directory.GetFiles() with multiple filters?

    - by Jason Z
    I am trying to use the Directory.GetFiles() method to retrieve a list of files of multiple types, such as mp3's and jpg's. I have tried both of the following with no luck: Directory.GetFiles("C:\\path", "*.mp3|*.jpg", SearchOption.AllDirectories); Directory.GetFiles("C:\\path", "*.mp3;*.jpg", SearchOption.AllDirectories); Is there a way to do this in one call?

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  • GridBagConstraints weightx and weighty values

    - by xdevel2000
    In many books weightx and weighty values are expressed in different ways: some says 0.0 to 1.0 other says 0 to 100 other say until 1000 I'm a lot confused. In the API these variables are double types so I think the first is correct but what does it meaning a value of 0.4 or 0.7? are percentage values, point values? relative of what?

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  • Dark Windows Themes

    - by CaffGeek
    I spend all day staring at computer screens. I have changed my Visual Studio theme to a dark theme, and find it much easier on the eyes. I'd like to change the rest of windows. Unfortunately, the only themes installed by default that are dark, are high contrast. Which is NOT what I am going for here. I can't seem to find an official dark theme, that isn't high contrast. I've found dynamic black, which is a good example of what I'm looking for, but it's not an official theme. Is there anything out there?

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  • Which is the fastest idiomatic way to add all vectors (in the math sense) inside a Scala list?

    - by davips
    I have two solutions, but one doesn't compile and the other, I think, could be better: object Foo extends App { val vectors = List(List(1,2,3), List(2,2,3), List(1,2,2)) //just a stupid example //transposing println("vectors = " + vectors.transpose.map (_.sum)) //it prints vectors = List(4, 6, 8) //folding vectors.reduce { case (a, b) => (a zip b) map { case (x, y) => x + y } } //compiler says: missing parameter type for exp. function; arg. types must be fully known }

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  • BIND: How do I allow DNS query from specific external host?

    - by krbvroc1
    I'm running Centos 5.8 (bind 9.3.6). Here is my issue... I run my own DNS server to serve the local machine. I would like to use my DNS server from home. Since my home is a dynamic IP address, I am not sure how this would be accomplished. In my named.conf, there is an allow-query{} and allow-recursion{}. It seems both of those take an IP address, but i need to specify a hostname (at least a cname). This is not a public DNS server (so any is not an option). My hostname/cname is already updated automatically using nsupdate. The only solution I can think of, which I do not like, is to change my nsupdate script to somehow modify the named.conf to search/replace the allow-query/recursion IP address. That would require restarting named whenever the hostname changes as well as Is there some other way to handle this?

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  • How to use another type of EditingControl in a single .NET 3.5 DataGridView column ?

    - by too
    Is this possible to have two (or more) different kinds of cells to be displayed interchangeably in single column of C# .Net 3.5 WinForms DataGridView? I know one column has specified single EditingControl type, yet I think grid is flexible enough to do some tricks, I may think of only: Adding as many invisible columns to grid as required types of cells and on CellBeginEdit somehow exchange current cell with other column's cell Creating custom column and custom cell with possibility of changing EditingControl for single cell Which approach is better, is there any other solution, are there any examples ?

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  • How to use filegroups for DB split?

    - by Robin Jain
    In my project I have one DB used for everything. I want it to break into two databases. Static tables having look up values are to be stored in one DB and another DB would be having tables with dynamic data. My problem is that how would I use foreign key constraint in between those two DBs. Can someone help me out and suggest a way to proceed, better if I'm provided an example for the same. I thought of using synonyms for tables and then constraints on synonyms. but later I came to know that synonyms couldn't be used for constraints. I need to maintain relationships among the tables from both DB as the issue is with update, with a new release I just want to update look up tables and for the same I want to split my DB. I want to know how FileGroups could be used for this.

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  • Need recommendation for a table structure

    - by yapiskan
    I have an entity which has 4 different types of property that could have only one value for each case which are boolean, decimal, string or text. I don't want to define the table with 4 boolean, decimal, nvarchar and ntext columns. What would you recommend to cover this case?

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  • Testing local scoped object with mockito without refactoring

    - by supertonsky
    Say I have the following code: public class ClassToTest { AnotherClass anotherClass; public void methodToTest( int x, int y ) { int z = x + y anotherClass.receiveSomething( z ); } } public class AnotherClass { public void receiveSomething( int z ) {.. do something.. } } I want to make assertion on the value of the variable z. How do I do this? Variables x, y, and z could be some other Java class types, and I just used "int" for simplicity.

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  • MSSQL 2012 Error 26 and remote connection

    - by Rayfloyd
    I'm trying to set up MSSQL 2012 for a school project and I need to be able to connect to it remotely as my teammates will also be working on it. I did a clean install of SQL Server 2012 Express. Knowing I can't connect remotely straight off, I tweaked the settings that needed tweaking according to the internet. What I did 1.Made sure remote connections were allowed 2.Enabled TCP/IP 3.Removed 0s from Dynamic ports and set 1433 in TCP Port 4.Enabled Named Pipes 5.Created Outbound and Inbound traffic rules in the firewall for TCP port 1433 and UDP port 1434 6.Port forwarded 1433 to my "server" and 1434 too 7.made sure I was pingable 8.SQL Server authentication is enabled 9.I have restarted my computer so that changes to the config are saved So whenever I try to connect using management studio on another computer than the server using myusername.dyndns.org\SQLEXPRESS I get error 26 I have been searching for different solutions for 3 hours with no luck.

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  • How can I define a constructor in an open generic type?

    - by Cort
    I am trying to create on open generic type that has a constructor to be used by derived types, but I either don't know how to do it or it is not possible -- not sure which. public struct DataType<T> : IDataType { private T myValue; private TypeState myState; private DataType<T>(T initialValue, TypeState state) { myValue = initialValue; myState = state; } } Any help much appreciated! Cort

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  • Is it possible to alias a hostname in linux?

    - by user10178
    I am looking for the right answer to the above question. It has been asked by jmillikin at ubuntu forums as follows: Is it possible to create a hostname alias? Sort of like /etc/hosts, but with other hostnames rather than IP addresses. So that with some file like this, you could ping "fakehost1", and it would be re-mapped to "realhost", and then "realhost" would be resolved to an IP address. # Real host # Aliases realhost fakehost1 fakehost2 fakehost3 Somebody has answered about ssh. But not about ping, etc. My main purpose is to use it as an alias for svn server. In my case, realhost is under dynamic ip. So, "/etc/hosts" alias doesn't work. I want to access my svn server as svn://my_svnserver/my_repos instead of svn://realhost/my_repos. Thanks in advance for any advice.

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