Search Results

Search found 7722 results on 309 pages for 'pitfalls to avoid'.

Page 97/309 | < Previous Page | 93 94 95 96 97 98 99 100 101 102 103 104  | Next Page >

• The problem of return reference to local variable

  - by skydoor

  I happened to find this code return 5. It's OK to write it this way or should definitely be avoid? int& f() { int i = 5; return i; } int main(){ cout<<f()<<endl; }

  Read the article

• To HTMLENCODE or not to HTMLENCODE user input on web form (asp.net vb)

  - by Phil

  I have many params making up an insert form for example: x.Parameters.AddWithValue("@city", City.Text) I had a failed xss attack on the site this morning, so I am trying to beef up security measures anyway.... Should I be adding my input params like this? x.Parameters.AddWithValue("@city", HttpUtility.HtmlEncode(City.Text)) Is there anything else I should consider to avoid attacks? Thanks

  Read the article

• Are hash collisions with different file sizes just as likely as same file size?

  - by rwmnau

  I'm hashing a large number of files, and to avoid hash collisions, I'm also storing a file's original size - that way, even if there's a hash collision, it's extremely unlikely that the file sizes will also be identical. Is this sound (a hash collision is equally likely to be of any size), or do I need another piece of information (if a collision is more likely to also be the same length as the original). Or, more generally: Is every file just as likely to produce a particular hash, regardless of original file size?

  Read the article

• How to read Excel file using vb.net

  - by Mark

  How to read excel file using vb.net.. I have a code to read the excel file but suddenly it crashes the output when I deleted some rows in excel file.. The deleted rows was also outputted in my coded program. Can anyone help me on how to read excel file and ignore those deleted rows to avoid unexpected null output..

  Read the article

• How can my WiX uninstall restore a registry value change?

  - by Thomas

  The installer I'm writing using WiX 3.0 uses a RegistryValue element to modify an existing registry value (originally written by our main product). I'm trying to figure out a way to restore the registry value when the user uninstalls my utility. I'd like to avoid using a custom action, but that might be the only recourse? TIA.

  Read the article

• Is there a convention, when using Java RMI, to use the dollar sign $ in a variable name?

  - by Thomas Owens

  I realize that it is a valid part of a variable name, but I've never seen variable names actually use the symbol $ before. The Java tutorial says this: Additionally, the dollar sign character, by convention, is never used at all. You may find some situations where auto-generated names will contain the dollar sign, but your variable names should always avoid using it. However, since this is geared toward Java beginners, I'm wondering if in the distributed world, the $ lives on with a special meaning.

  Read the article

• How to define and use Python generators appropriately

  - by Morlock

  I want to define a generator from a list that will output the elements one at a time, then use this generator object in an appropriate manner. a = ["Hello", "world", "!"] b = (x for x in a) c = next(b, None) while c != None: print c, c = next(b, None) Is there anything wrong or improvable with the while approach here? Is there a way to avoid having to assign 'c' before the loop? Thanks!

  Read the article

• MVC 2 Validation without BuddyClasses

  - by Muhammad Adeel Zahid

  Hello EveryOne, i m using asp.NET MVC 2 for my current project and i need to validate form fields both on client and server side. for that i started with DataAnnotations. Now, i figure out that i have to write buddy class for every model or i have to go to designer generated code and put my annotations there (not a good idea though). if someone can suggest me a solution that helps me avoid writing those buddy classes and get the same functionality. Regards Adeel

  Read the article

• ITunes gives error 0xe8008001 when syncing

  - by Gyozo Kudor

  Does anybody knwo what this error means? How can I avoid it. Im using non-jailbroken iPhone 3.1.3 and have made an app using Titanium. Any help is welcome.

  Read the article

• Easiest way to automatically download required modules in Python?

  - by user248237

  I would like to release a python module I wrote which depends on several packages. What's the easiest way to make it so these packages are programmatically downloaded just in case they are not available on the system that's being run? Most of these modules should be available by easy_install or pip or something like that. I simply want to avoid having the user install each module separately. thanks.

  Read the article

• How do I make an HTML text box show a hint when empty?

  - by Michael L Perry

  I want the search box on my web page to display the word "Search" in gray italics. When the box receives focus, it should look just like an empty text box. If there is already text in it, it should display the text normally (black, non-italics). This will help me avoid clutter by removing the label. BTW, this is an on-page AJAX search, so it has no button.

  Read the article

• jQuery callbacks - short version

  - by Frankie

  I've dug the manual and tried extensivelly to drop the extra function(){...} call after the error and success to do it like mootools but to no good luck. Is there any way i can avoid the extra function in jQuery? function doFileDelete(ui) { $.ajax({ error: function() { doFileDeleteAnimation(ui, false) }, success: function() { doFileDeleteAnimation(ui, true) }, url: '/url-to-delete-file' }); } Thank you!

  Read the article

• why is java.lang.Throwable a class?

  - by mdma

  In java adjectives ending in -able are interfaces Serializable, Comparable etc... So why is Throwable a class? Wouldn't exception handling be easier if Throwable were an interface? Obviously, changing it now is out the question. But could it be made abstract? Wouldn't that avoid the bad practice of throw new Throwable();

  Read the article

• How to "signal" interested child processes (without signals)?

  - by Teddy

  I'm trying to find a good and simple method to signal child processes (created through SocketServer with ForkingMixIn) from the parent process. While Unix signals could be used, I want to avoid them since only children who are interested should receive the signal, and it would be overkill and complicated to require some kind of registration mechanism to identify to the parent process who is interested. (Please don't suggest threads, as this particular program won't work with threads, and thus has to use forks.)

  Read the article

• Pass data to a HttpModule

  - by Dejan

  I have a funny little situation on my hands. I have a httpModule on my hands that I have to feed with context relative data. That means that on the page I have to set something that the HttpModule can then react on. If possible I would like to avoid having call context data in the session. Any bright ideas out there. thx for the answer.

  Read the article

• fake python modules via symlinks: on windows?

  - by eudoxos

  I have several compiled python modules; they are put into a single .so (to avoid runtime linking, there are cross-module symbol dependencies), but a number of symlinks points to this .so: libfoo.so -> liball.so libbar.so -> liball.so liball.so This way, I can do import foo (Python will call initfoo() defined in liball.so) or import bar (calls initbar()). I am wondering if this approach will work on Windows?

  Read the article

• Regex: How do I match some regex logic 1 or more times?

  - by tom

  I already have some regex logic which says to look for a div tag with class=something. However, this might occur more than once (one after another). You can't simply add square brackets around that complex regex logic already (e.g. [:some complicated regex logic already existing:]* -- so how do you do it in regex? I want to avoid having to use the programming language logic to append that regex logic after itself if I can... Thanks

  Read the article

• Regex.Replace() for replacing the whole occurrence

  - by Nimmi

  Hi, Am using regex.Replace() to replace the whole occurrence of a string.. so I gave like Regex.Replace(str,@stringToReplace,"**"); where stringToReplace = @"session" + "\b"; if i give like that its not replacing.. but if i give like Regex.Replace(str,@"session\b","**"); then its working.. how to avoid this.. i want to pass value which will be set dynamically.. Thanks nimmi

  Read the article

• Smarty html_options

  - by SeanJA

  For smarty's html_options function, is there a way to avoid having to do this (other than not using smarty that is)? {if $smarty.post} {html_options name=option_1 optins=$options selected=$smarty.post.option_1} {else} {html_options name=option_1 optins=$options} {/if} I realize that it won't show up in the template, but it seems like a bad practice to leave something that is not defined in the template (it also fills up my error logs with noise about undefined indexes).

  Read the article

• Can I use classes and controls from main project in other projects within one solution?

  - by Lukas

  How should I divide source files into projects (within one solution) to be able to use common classes in more relatively independent apps, avoid lots of dlls needed (preferably all in one file for each application), keep it fast? There are working (data processing) classes, User controls, some utility classes and Forms of the application.

  Read the article

• Continue Considered Harmful?

  - by brian

  Should developers avoid using continue in C# or its equivalent in other languages to force the next iteration of a loop? Would arguments for or against overlap with arguments about Goto?

  Read the article

• Please help with EclipseIDE message: "No appropriate file located or no file selected. Debug Termina

  - by Kirzilla

  Hello, I'm always getting this message in alert box. Please tell me what should I do to avoid it? Thank you

  Read the article

• How to bundle a native library and a JNI library inside a JAR?

  - by Alex B

  The library in question is Tokyo Cabinet. I want is to have the native library, JNI library, and all Java API classes in one JAR file to avoid redistribution headaches. There seems to be an attempt at this at GitHub, but It does not include the actual native library, only JNI library. It doesn't work (for me): when I use this JAR, the JVM does not even seem to find the JNI library which is packaged inside the JAR: java.lang.UnsatisfiedLinkError: no jtokyocabinet in java.library.path (tokyo_cabinet.clj:19)

  Read the article

• replace only one variable in web.py templates

  - by Asterisk

  I am passing variable to template in web.py and have the same condition in some places. Like this: $if myvar=="string1": $passed argument1 ............ $if myvar =="striung2": $passed argument2 If say myvar is "string1" and I pass passed = "AAA" then I have AAA argument1 on my page, but the other if statements get replaced by empty string? How to avoid that? I.e. how to leave other statements intact?

  Read the article

• dsoFramer, Find and replace does not highlight the searched string

  - by Bilel Boughanmi

  I'm using DsaFramer to embed word document into winform, when using the Find and Replace window the searched strings are not highlighted, it seems that it is a paint issue. Is there someone who met the same problem, how can I avoid this. Regards.

  Read the article

< Previous Page | 93 94 95 96 97 98 99 100 101 102 103 104  | Next Page >