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  • Is using the break statement bad practice?

    - by Lchi
    I've been told by professors and peers at my university that using the break statement is bad practice, but through my coursework haven't come up with a great reason why. Those who claim that it is bad say that it's a "get out of jail free card" and that you can always avoid using it. My guesses for why its considered bad would be that you could possibly skip some cleanup code after the break, or similarly exit some control structure in an inconsistent state. Is there any reason why using break is(n't) bad practice?

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  • LinearLayout as custom button, OnClickListener never called

    - by ohra
    I've been using the common Android Button with both icon (drawableTop) and text. It works really poorly if you want to have a non-standard size button, so I decided to make a custom button with a LinearLayout having the following layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" style="@style/ButtonHoloDark" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center" android:clickable="true" android:focusable="true" android:orientation="vertical" > <ImageView android:id="@+id/buttonIcon" android:layout_width="fill_parent" android:layout_height="wrap_content" android:duplicateParentState="true" /> <TextView android:id="@+id/buttonText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:duplicateParentState="true" android:gravity="center" android:textColor="@color/white" /> </LinearLayout> The layout is used by a custom class: public class CustomIconButton extends LinearLayout { public CustomIconButton(Context context, AttributeSet attrs) { super(context, attrs); setAttributes(context, attrs); LayoutInflater.from(context).inflate(R.layout.custom_icon_button, this, true); } ... But when I set an OnClickListener on my button in its parent layout it never gets called. I can only receive clicks if a set the listener to the ImageView and/or TextView. This leads to two possible effects when the button is clicked: The click is inside the ImageView or the TextView. The click is registered ok, but the buttons state drawable doesn't change i.e. it doesn't appear depressed. The click is inside the "empty area" of the button. The click is not registered, but the state drawable works ok. Neither of these is feasible. I've played around with the following attributes on the LinearLayout or its children, but none really seem to have any effect whether true or false: duplicateParentState clickable focusable There doesn't seem to be any reasonable way to get the LinearLayout parent receive clicks instead of its children. I've seen some possible solutions overriding dispatchTouchEvent or onInterceptTouchEvent on the custom component itself, but that really seems like a big mess if I have to start analyzing touch events to identify proper clicks. So OnClickListener on a LinearLayout with children = no go?

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  • How do I implement graphs and graph algorithms in a functional programming language?

    - by brad
    Basically, I know how to create graph data structures and use Dijkstra's algorithm in programming languages where side effects are allowed. Typically, graph algorithms use a structure to mark certain nodes as 'visited', but this has side effects, which I'm trying to avoid. I can think of one way to implement this in a functional language, but it basically requires passing around large amounts of state to different functions, and I'm wondering if there is a more space-efficient solution.

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  • Get number of concurrent users online - ASP.NET

    - by Srikanth
    I would like to know the number of users logged into my ASP.NET 2.0 application. Points to be considered: 1) Simplest way would be to use Application or Cache object to have the counts on Session start or end. However this would fail if there is a worker process recycle. Wouldn't it? 2) Should't make a difference whether the session is inproc/state server managed/ or SQL server managed. 3) Should preferably be seamless to a web-farm architecture.

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  • How to create and use resources in .NET

    - by Matthew Scharley
    How do I create a resource that I can reference and use in various parts of my program easily? My specific problem is that I have a NotifyIcon that I want to change the icon of depending on the state of the program. A common problem, but one I've been struggling with for a long time.

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  • php/ldap - bind fails but errorno doesn't execute

    - by user240907
    I am trying to connect to ldap with a php web application. If the username/password is correct everything works fine however if the username/password is incorrect I get the following error: PHP Warning: ldap_bind() [function.ldap-bind]: Unable to bind to server: Invalid credentials for some reason I am not able to look at the errorno or the state of the bind variable afterwards to print the appopriate user friendly error message. any ideas?

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  • How to make an Inputfield change its design when active?

    - by Opoe
    Hi all, Let's say my background color is red. I want the input textfield to appear red, but when you click inside the input field to type it becomes a regulad textfield. And ofcourse when you are not active in the input field it should be back to its original state (red). Its actually something you see quite often. I thought of using toggleclass? My input fields are all appended with jQuery Thanks in advance

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  • SQL Query Help - Return row in table which relates to another table row with max(column)

    - by Seth
    I have two tables: Table1 = Schools Columns: id(PK), state(nvchar(100)), schoolname Table2 = Grades Columns: id(PK), id_schools(FK), Year, Reading, Writing... I would like to develop a query to find the schoolname which has the highest grade for Reading. So far I have the following and need help to fill in the blanks: SELECT Schools.schoolname, Grades.Reading FROM Schools, Grades WHERE Schools.id = (* need id_schools for max(Grades.Reading)*)

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  • Trouble with setting entry point for GWT service

    - by Xorty
    Hello. I've followed serveral tutorials and read official docs at code.google.com, but still didn't manage to resolve this thing. I am creating simple service that'll check if user can be logged. CLIENT SIDE: public interface LoginService extends RemoteService { /** * Checks, if user has valid login. * @param user User's login. * @return True if such a login is in the database. */ boolean isValidUser(User user); } And here is Async interface: public interface LoginServiceAsync { /** * Checks, if user has valid login. * @param user User's login. * @param callback the callback to return True if such a login is in the database. */ void isValidUser(User user, AsyncCallback<Boolean> callback); } SERVER SIDE: public class LoginServiceImpl extends RemoteServiceServlet implements LoginService { /** * serial version UID */ private static final long serialVersionUID = 1044980345057997696L; /**{@inheritDoc} */ @Override public boolean isValidUser(User user) { boolean success = true; //TODO change } } Now I have entry point class MailClient.java. I append here widget like: CustomWidgets.getLoginWidget(this); // access rootPanel and append widget Now I need to make actual call to my service, and here is problem: LoginServiceAsync loginService = (LoginServiceAsync) GWT.create(LoginService.class); User user = new User(boxName.getText(), boxPassword.getText()); AsyncCallback<Boolean> callback = new AsyncCallback<Boolean>() { @Override public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); //TODO change } @Override public void onSuccess(Boolean result) { Window.alert("success"); //TODO change } }; ((ServiceDefTarget) loginService).setServiceEntryPoint(GWT.getModuleBaseURL()+"login"); // dunno what should be here So to recap, I don't know how to set service's entry point. Here's my MailClient.gwt.xml file: <module> <inherits name="com.google.gwt.user.User"/> <inherits name="com.google.gwt.user.theme.standard.Standard"/> <entry-point class="com.xorty.mailclient.client.MailClient"/> <servlet path="/login" class="com.xorty.mailclient.server.servlets.LoginServiceImpl" /> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> </module> My web.xml file: <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <!-- Default page to serve --> <welcome-file-list> <welcome-file>MailClient.html</welcome-file> </welcome-file-list> <servlet> <servlet-name>LoginService</servlet-name> <servlet-class>com.xorty.mailclient.server.servlets.LoginServiceImpl</servlet-class> </servlet> <servlet-mapping> <servlet-name>LoginService</servlet-name> <url-pattern>/com.xorty.mailclient.MailClient/login</url-pattern> </servlet-mapping> </web-app> And here is screenshot of project structure:

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  • Looking for similar projects: Iphone/Android + Google Maps + "external" database = sightseeing map

    - by sniurkst
    Hello, sorry, it's not exactly a programming question, but I am currently in a research state and looking for similar projects, so I could analyze them: It should be application to iPhone or Android or other mobile platform, where, basically, user can access map with "places of interest" and add it's own "place of interest" (with photo and description). Kind of, community generated sightseeing map. I know it is quite simple and not a groundbreaking idea, but my google-fu is quite weak and I can't find anything like that.

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  • Rewrite URLs for DNN

    - by codemypantsoff
    I have a site and already trying to do a little url rewritting but want to know if there is a solution to make it better my current state urls look like this http://snit.us/Home/tabid/314/CN/1/RE/23/United_States_Missouri.aspx I want to change them to something more ordered so in my new scheme i want to do this http://snit.us/Home/United_States/Missouri/default.aspx obviously the point is that if i remove missouri from the new url it would find all United_States - etc etc etc even better would be to have http://snit.us/Home/United_States/Missouri so its even less cluttered

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  • AWStats log format for tomcat access logs which has X-Forwarded-For

    - by Nix
    What should be the AWStats log format for below tomcat access logs ? I tried these formats but the external IP addresses are not coming into AWStats reports. LogFormat="%host %other %logname %time1 %methodurl %code %bytesd %refererquot %uaquot %referer %other %other" LogFormat="%other %other %logname %time1 %methodurl %code %bytesd %refererquot %uaquot %host_proxy" tomcat valve settings: pattern="%h %l %{USER_ID}s %t &quot;%r&quot; %s %b &quot;%{Referer}i&quot; &quot;%{User-Agent}i&quot; &quot;X-Forwarded-For=%{X-Forwarded-For}i&quot; &quot;JSESSIONID=%{JSESSIONID}c&quot; %D" Log entry: 127.0.0.1 - - [04/Nov/2013:13:39:55 +0000] "GET / HTTP/1.1" 200 12345 "https://www.google.com/url?some_url" "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36" "X-Forwarded-For=real_ip, proxy_server_internal_ip" "JSESSIONID=-" 12345

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  • Android Set ImageButton as Toggle

    - by GuyNoir
    How can I have an imagebutton stay in the 'pressed' state when it is clicked? Basically I just want the background to be the depressed background, but I can't figure out how to set it. At the moment, I've just copied the selected button background into my res folder, but when I set it as the background, it becomes blurry (since the original image is bigger than the button itself). Normal Background: What I'm getting:

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  • What does the MS Ajax Framework use location.hash for?

    - by DDaviesBrackett
    I've noticed that the MS ajax framework touches the action of the default form during Sys.Application.initialize, appending location.hash to it. This is interfering with other code in my app that expects different behaviour. What does the framework do with that? It refers to the values it puts on the hash as 'state', but how do I find out what it's communicating and from where?

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  • Retrieve a domain name based on an IP Address?

    - by Neil Kodner
    I'm reviewing some apache logs, specifically with respect to downloaded files. I'm interested in knowing, if possible, which domain is responsible for the download, given an IP address. I've given nslookup a try and it seems to (mostly) get the job done but it returns all sorts of extraneous information. Ideally, I pass in an IP and receive a domain back. Before I write a shell script to parse the output of nslookup to capture the domain, I'd like to know if this is the best way of approaching this problem, or if there is a more tried-and-true method of doing this. Specifically, I'd like to know if an address resolves to an amazonaws.com domain. I understand that this might be difficult because EC2 machines are dynamically created and destroyed - I'd like to know if the IP addresses for AWS/EC2/EMR machines fit any sort of addressing pattern.

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  • writing an Dynamic query in sqlserver

    - by prince23
    hi, DECLARE @sqlCommand varchar(1000) DECLARE @columnList varchar(75) DECLARE @city varchar(75) DECLARE @region varchar(75) SET @columnList = 'first_name, last_name, city' SET @city = '''London''' SET @region = '''South''' SET @sqlCommand = 'SELECT ' + @columnList + ' FROM dbo.employee WHERE City = ' + @city and 'region = '+@region --and 'region = '+@region print(@sqlCommand) EXEC (@sqlCommand) when i run this command i get an error Msg 156, Level 15, State 1, Line 8 Incorrect syntax near the keyword 'and'. and help would great thank you

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  • Why do some devices seemingly need the wifi router to reboot before they can connect?

    - by CreeDorofl
    I've noticed a pattern but I'm not sure if it's a crappy router, crappy wireless device, or maybe everything is working as intended. I can wirelessly connect my office PC to the router's settings page for a day, maybe two, then afterwards I can't anymore until it's reset. Unrelated, but similar, in various places that offer free wifi, my kindle will connect fine most days, but occasionally won't unless the router is reset. After the reset, I connect ok. What's happening behind the scenes that makes a router stop allowing you to connect? Is it something on my end that's changing, or on the router's end?

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  • Best way to get timezone of user based on area code

    - by niyogi
    Hi folks I'm attempting to get a timezone of a user based on area code information that they provided. I discovered the following resource on maxmind: http://geolite.maxmind.com/download/geoip/api/php/timezone/ I suspect that I could use this with another api that provides the state that an area code belongs to. I'm looking for a simple REST API that provides this info - or a robust scraping routine that achieve the same results. Thanks in advance!

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  • how to Invoke User-Defined Functions That Return a Table Data Type

    - by nectar
    here my code- create function dbo.emptable() returns Table as return (select id, name, salary from employee) go select dbo.emptable() error: Msg 4121, Level 16, State 1, Line 1 Cannot find either column "dbo" or the user-defined function or aggregate "dbo.emptable", or the name is ambiguous. while when I run sp_helptext emptable it shows- create function dbo.emptable() returns Table as return (select id, name, salary from employee) it means function exists in database then why it is giving such error?

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  • mailsend not sending to (or qmail not receiving from) the same machine

    - by roman
    A web applications sends two emails: to the user of the webapp to the administrator the administrators mailbox (qmail) is on the same machine as the web application (php, apache, /usr/sbin/sendmail). email 1 works, email 2 sometimes doesn't work. I don't see any pattern in the mails that don't work. Also because I don't exactly know WHICH emails failed (since the email itself would be the only notification). email 2 looks like this: from: <[email protected]> #changes for each user to: <[email protected]> What could be the problem? Are rejected emails stored somewhere? (if they are rejected.. how do I check this?)

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