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• C# 4: how to in-line detect for nulls?

  - by Dr. Zim

  In C# 4, wasn't there a short cut for checking for null values like so: if( myobject?.myproperty?.myotherproperty?.value != null ) The value would return null and not throw an exception. Anyone have a link to how to use it or at least the syntax?

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• cretaing SHP from SQL

  - by Z77

  Is it possible convert sql to shp file using pgsql2shp without shell. Through some sql (postgis, postgresql) syntax?

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• XCode: Function argument indentation

  - by user343317

  I was unable to find any solution of my specific issue. I'm using Xcode 3.2. I'd like to indent the next line of function argument just one step in from the previous line: somevariable = pow( a, b); However, Xcode's syntax-aware indenting insists on converting the above into: somevariable = pow( a, b); Where the arguments are aligned with opening parenthesis of the function. How can I make indenting be configured to match my preference?

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• Which Tool can generate UML by SQL?

  - by Haiperlink

  I'm searching a tool for generating UML-Diagrams by the import of SQL-Syntax-Files. I need it for personal usage. Best if it's free or if there is a free trial license available.

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• Source Code Browser

  - by James Fielding

  Hello I'm looking for a piece of relatively simple software to browse large C++ project. What I would like is something that is somewhere between a simple text editor and a full-blown IDE like Eclipse. I would like syntax highlighting, a way to see all classes/methods defined in a file, a way to find where a particular method is called from and where a variable is declared/defined. Any ideas? Thank you!

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• VB.Net calling New without assigning value

  - by dcp

  In C# I can do this: new SomeObjectType("abc", 10); In other words, I can call new without assigning the created instance to any variable. However, in VB.Net it seems I cannot do the same thing. New SomeObjectType("abc", 10) ' syntax error Is there a way to do this in VB.Net?

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• Is there a pure HTML5 emacs mode?

  - by Marcelo Santos

  Question http://stackoverflow.com/questions/1082474/authoring-html5-in-emacs talks about nxml-mode but, from what I read, that can only be used for XHTML5, I want to use emacs with HTML5 (no XML syntax). Is there any mode with auto-indentation, tag/attribute completion, etc.?

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• apex button to call a page in another application

  - by jaykio77

  I have a workspace with which I have 5 applications based on same schema. Now I want to have a main page from where I could call main pages of all these applications. I used this syntax to call home page in another application but to no avail f?p=4000:4150:&APP_SESSION. Where 4000:4150 are the values for the application and the page I want to display. Please let me know where am I making mistake.

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• Can I update an Android provider.Settings.System value?

  - by Mr_Ed

  I can read settings like this, for example: final String mytest = System.getString(this.getContentResolver(), System.AIRPLANE_MODE_ON); ...but can't seem to write to settings using putString, no matter what I've tried. Maybe it is the scope of this.getContentResolver()??? I'm a newbie, so who knows, maybe it can't be done, or it's just syntax? Currently the code is in the onCreate of an Activity class. Any insight is much appreciated.

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• what's the use of 0 in wait system call?

  - by Supereme

  Hi, The syntax for the wait system call is pid= wait(&var) where pid is the process id of child and var is the variable which will contain the reason for exiting child. But what happens when we use wait((int *)0)? What does it exactly mean? Thank you.

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• lua - how to call function from above it in code (prior to it being defined)?

  - by Greg

  what is the syntax (i.e. code example) in Lua so you can call a function prior to it being defined? i.e. how do you kind of create the function, but then add it's implementation further down in code. So roughly like this: define function name (doX) here somehow (i.e. subject of this question) call doX here (further down in the code) doX implemention here (i.e. all functions down at the bottom of the file)

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• Netbeans: How do I break on a NullPointerException?

  - by darren

  Hi When debugging a java program in netbeans, I want the debugger to stop on the line that causes a NullPointerException so I can examine the variables there. I believe I have to use a condition on the breakpoint set at that line, but what is the syntax of the condition? thanks for the help

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• Rails: ruby script/generate model, where are the docs?

  - by yar

  I am running ruby script/generate scaffold or ruby script/generate model and I know the basic syntax, like ruby script/generate scaffold Dude name:string face:boolean but I do not know things like: should names of variables have underscores or be camelCased? what kind of variable types are acceptable? Where can I find such information? THANKS! P.S. The answers to my two questions would help for now, too :)

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• ASP.NET MVC: Optimally render element attribute

  - by majkinetor

  I know there is some syntax with ? to optionally render attribute. But I can't find it now that I need it ... Something like: < input checked=<%? model.IsActivated % > ... Thanks.

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• How to set an asp:listitem to an enumeration value declaratively?

  - by Curtis White

  I have an asp:RadioButtonList and want to declaratively bind the value to an enumeration. I tried using this type syntax: value = <%# ((int)MyEnum.Value).ToString() %" I get an error list item does not support databinding. Any ideas?

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• in jQuery, why are we using this ({ })

  - by uzay95

  I wonder that, why are we using ({ }) ? Is it delegate ? What does it mean to use this syntax ? What are we wrapping with it ? For ex: $.ajaxSetup ({ // <-- THIS error: fError, compelete: fComp, success: fSucc }); // <-- AND THIS

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• python print end=' '

  - by Hath

  i have this python script where i need to run 'gdal_retile.py' but i get this an exception on this line: if Verbose: print(Building internam Index for %d tile(s) ..." % len(inputTiles), end=' ') the end='' is invalid syntax just curious as to why.. and what the author probably meant to do. I'm new to python if you haven't already guessed.

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• What is wrong with this javascript?

  - by bala3569

  i use this javascript syntax for validating a checkbox... alert(document.getElementById("ctl00_ContentPlaceHolder1_Chkreg").checked); if (document.getElementById("ctl00_ContentPlaceHolder1_Chkreg").checked == false) { document.getElementById("ctl00_ContentPlaceHolder1_ErrorMsg").innerHTML = "please select the checkbox"; document.getElementById("ctl00_ContentPlaceHolder1_Chkreg").focus(); return false; } My alert showed me false but my if loop is not working... Any suggestion...

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• HQL query to join 2 tables with the same key

  - by kawtousse

  Hi everyone Iam trying to this in HQL: select A.a A.a1, B.b,B.b1 from A,B where A.x=B.x; It is simple to realize the join with sql but when returninig in HQL I find a problem. would you please give me the HQL syntax for the join Thanks for help.

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• What is wrong with this jquery snippet in ie6?

  - by codeninja

  ie6 isn't playing nice with my jquery snippet, why is this throwing a syntax error in IE6 if(typeof isIE6 !="undefined"){ $("#dropdown-list li").hover( function(){ $(this).addClass("hover"); }, function(){ $(this).removeClass("hover"); }, ); };

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• What's wrong with this UPDATE FROM using a case statement?

  - by Blankman

  update p set p.storePrice = CASE WHEN p.costPrice BETWEEN 0.00 AND 1.00 THEN p.costPrice * 1.0 CASE WHEN p.costPrice BETWEEN 0.00 AND 1.00 THEN p.costPrice * 1.0 ELSE p.msrpPrice END FROM product p WHERE p.type = 1 The error says: Msg 156, Level 15, State 1, Line 9 Incorrect syntax near the keyword 'CASE'. I can't seem to see any issue with the sql?

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• How do I use multiple precisions in printf()?

  - by Tommy

  Looking at the information under the heading "Precision can be omitted or be any of:". The example: printf("%.*s", 3, "abcdef"); works, outputting:abc (truncating the rest of the string.) Now, I would like to have a string with multiple parameters formatted (truncated): printf("%.*s, %.*s", 3, 3, "abcdef", "xyz123"); but the program crashes. What is the correct syntax? Thank You.

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• Python: How can I subclass a class I'm nesting in?

  - by singpolyma

  I am trying to do the following in a bit of python code: class Parent: class Child(Parent): pass And it does not work. Is there any python syntax I can use to achieve the same result? Thanks.

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• Is there a better alternative to the Mongo shell?

  - by afvasd

  Dear Everyone, Is there a better shell than the native mongo shell? When I press UP I am seeing ^[[A . Does the shell not support last query? Tabbing in the shell does not autocomplete either. Of course, if there's a shell with syntax highlighting that would be great Is there an alternative that has the following features? (Or at least has some of them).

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• I'm looking for a textbook based introduction to the php 5.3.2? Any suggestions?

  - by prgrmnGuru

  By textbook based i mean the author asks the reader questions/mini projects after every section/chapter of the book. And the book includes background info on php 5, like what kind of language, its use, syntax/semantix/structure etc. Any suggestions?

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