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  • What should NOT be included in comments? (opinion on a dictum by the inventor of Forth)

    - by AKE
    The often provocative Chuck Moore (inventor of the Forth language) gave the following advice (paraphrasing): "Use comments sparingly. Programs are self-documenting, with a modicum of help from mnemonics. Comments should say WHAT the program is doing, not HOW." My question: Should comments say WHY the program is doing what it is doing? Update: In addition to the answers below, these two provide additional insight. 1: Beginner's guide to writing comments? 2: http://programmers.stackexchange.com/a/98609/62203

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  • How to name setter that does data conversion?

    - by IAdapter
    I'm struggling with how to name this method, I don't like the "set" prefix, because I feel it should be reserved for normal "dumb" setters and some tools might not like it (i did not check it in checkstyle, pmd, etc., but I got a feeling they won't like it.) for example (in java, but I feel its language agnostic) public void setActionListenerClicked(boolean actionListenerClicked) { this.actionListenerClicked = actionListenerClicked ? "1" : "0"; } The only purpose of this method is ONLY to set, this method is needed and cannot be joined with any other (because of framework used). P.S. I DO know that question is similar to How to name multi-setter?, but I feel its not the same question.

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  • (Joomla 1.6) Template position descriptions don't refresh

    - by avanwieringen
    I want to change a description of a template position, so when I go to Admin-Extensions-Module Manager I see a different description of a module position in the position list when I edit a module. However, when I change (for instance) the template 'beez_20' and want to rename the name of the position 'debug', I change the description (TPL_BEEZ_20_POSITION_DEBUG) in the language file 'languages\en-GB\en-GB.tpl_beez_20.sys.ini' to something different, say 'Abracadabra'. However, the changes don't appear in the position list and I can find no reference whatsoever of how or when the ini files are read or maybe cached. Does anyone has a clue?

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  • How to name multi-setter?

    - by IAdapter
    I'm struggling with how to name this method, I don't like the "set" prefix, because I feel it should be reserved for normal "dumb" setters and some tools might not like it (i did not check it in checkstyle, pmd, etc., but I got a feeling they won't like it.) for example (in java, but I feel its language agnostic) public void setField1Field2(String field1, String field2) { this.field1 = field1; this.field2 = field2; } The only purpose of this method is ONLY to set, this method is needed and cannot be joined with any other (because of framework used).

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  • (Joomla 1.6) Template position descriptions don't refresh

    - by user6301
    I want to change a description of a template position, so when I go to Admin-Extensions-Module Manager I see a different description of a module position in the position list when I edit a module. However, when I change (for instance) the template 'beez_20' and want to rename the name of the position 'debug', I change the description (TPL_BEEZ_20_POSITION_DEBUG) in the language file 'languages\en-GB\en-GB.tpl_beez_20.sys.ini' to something different, say 'Abracadabra'. However, the changes don't appear in the position list and I can find no reference whatsoever of how or when the ini files are read or maybe cached. Does anyone has a clue?

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  • Vim and emacs usage/use case/user statistics

    - by G. Kayaalp
    I wonder if there are statistical documents/research based on use of the two major text editors, in which amount of usage is compared to use case, be it programming language, industry, user age, OS and/or many other things I can't think of now. I don't need this information for an assignment/homework or something, I'm just curious about it. I've been searching this for some time, not very intensively, and only thing I have found was this: Emacs user base size Lastly, I want to denote that I'm not looking for estimations. I'm not asking if one editor is better that the other, nor I am expecting help on choice between them. I'm not asking for opinions.

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  • Where, in an object oriented system should you, if at all, choose (C-style) structs over classes?

    - by Anto
    C and most likely many other languages provide a struct keyword for creating structures (or something in a similar fashion). These are (at least in C), from a simplified point of view like classes, but without polymorphism, inheritance, methods, and so on. Think of an object-oriented (or multi paradigm) language with C-style structs. Where would you choose them over classes? Now, I don't believe they are to be used with OOP as classes seem to replace their purposes, but I wonder if there are situations where they could be preferred over classes in otherwise object-oriented programs and in what kind of situations. Are there such situations?

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  • I'm a PeopleSoft Developer. Should I learn other languages (C# Java...)?

    - by PSDev
    I've been doing PeopleSoft development for 2 years. Recently, I want to relocate and find out there are not that many PeopleSoft development out there. 90% of the vacant positions are contract type of jobs. I'd rather get a full time permanent position. In PS, I do a lot of maintenance rather than new programming. It does get very boring. Also, I'm not sure if Oracle will one day pull off the plug for PS. What language is in most demand and also offers above average salary? Is it C#, Java, Python, Perl, ...? Thanks.

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  • What to do if I hate C++ header files?

    - by BlaXpirit
    I was always confused about header files. They are so strange: you include .h file which doesn't include .cpp but .cpp are somehow compiled too. NOTE: I UNDERSTAND EVERYTHING ABOUT THE HEADERS, PLEASE DON'T TELL ME I'M STUPID OR SHOULD USE OTHER LANGUAGE Recently I joined a team project, and of course, both .h and .cpp are used. I understand that this is very important, but I can't live with copy-pasting every function declaration in each of multiple classes we have. How do I handle the 2-file convention efficiently? Are there any tools to help with that, or automatically change one file that looks like example below to .h and .cpp? (specifically for MS VC++ 2010) class A { ... Type f(Type a,Type b) { //implementation here, not in another file! } ... }; Type f(Type a) { //implementation here } ...

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  • What is the most handy function you've ever came across? [closed]

    - by Viniyo Shouta
    Obviously everything is 'handy' when it comes to programming terms, but some get a highlight spot, like containers, matrix trasnformation functions and many others. But in this case please mention the one it was more handy to you, saved you from sparing hours resolving a problem, or even the one you like more, What is it and what does it does? I'll start with an example. Language: C++ Function: std::sort (STL) What does it does: Arranges the elements in a specified range into a nondescending order or according to an ordering criterion specified by a binary predicate. (It arranges a container in decreasing order) Why of this question? Because I want to learn how to if possible make my own implementations of these functions for pure studying purposes, to enhance knowledge

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  • ZF2 Zend\Db Insert/Update Using Mysql Expression (Zend\Db\Sql\Expression?)

    - by Aleross
    Is there any way to include MySQL expressions like NOW() in the current build of ZF2 (2.0.0beta4) through Zend\Db and/or TableGateway insert()/update() statements? Here is a related post on the mailing list, though it hasn't been answered: http://zend-framework-community.634137.n4.nabble.com/Zend-Db-Expr-and-Transactions-in-ZF2-Db-td4472944.html It appears that ZF1 used something like: $data = array( 'update_time' => new \Zend\Db\Expr("NOW()") ); And after looking through Zend\Db\Sql\Expression I tried: $data = array( 'update_time' => new \Zend\Db\Sql\Expression("NOW()"), ); But get the following error: Catchable fatal error: Object of class Zend\Db\Sql\Expression could not be converted to string in /var/www/vendor/ZF2/library/Zend/Db/Adapter/Driver/Pdo/Statement.php on line 256 As recommended here: http://zend-framework-community.634137.n4.nabble.com/ZF2-beta3-Zend-Db-Sql-Insert-new-Expression-now-td4536197.html I'm currently just setting the date with PHP code, but I'd rather use the MySQL server as the single source of truth for date/times. $data = array( 'update_time' => date('Y-m-d H:i:s'), ); Thanks, I appreciate any input!

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  • Parsing an arithmetic expression and building a tree from it in Java

    - by ChocolateBear
    Hi, I needed some help with creating custom trees given an arithmetic expression. Say, for example, you input this arithmetic expression: (5+2)*7 The result tree should look like: * / \ + 7 / \ 5 2 I have some custom classes to represent the different types of nodes, i.e. PlusOp, LeafInt, etc. I don't need to evaluate the expression, just create the tree, so I can perform other functions on it later. Additionally, the negative operator '-' can only have one child, and to represent '5-2', you must input it as 5 + (-2). Some validation on the expression would be required to ensure each type of operator has the correct the no. of arguments/children, each opening bracket is accompanied by a closing bracket. Also, I should probably mention my friend has already written code which converts the input string into a stack of tokens, if that's going to be helpful for this. I'd appreciate any help at all. Thanks :) (I read that you can write a grammar and use antlr/JavaCC, etc. to create the parse tree, but I'm not familiar with these tools or with writing grammars, so if that's your solution, I'd be grateful if you could provide some helpful tutorials/links for them.)

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  • I need a fast runtime expression parser

    - by Chris Lively
    I need to locate a fast, lightweight expression parser. Ideally I want to pass it a list of name/value pairs (e.g. variables) and a string containing the expression to evaluate. All I need back from it is a true/false value. The types of expressions should be along the lines of: varA == "xyz" and varB==123 Basically, just a simple logic engine whose expression is provided at runtime. UPDATE At minimum it needs to support ==, !=, , =, <, <= Regarding speed, I expect roughly 5 expressions to be executed per request. We'll see somewhere in the vicinity of 100/requests a second. Our current pages tend to execute in under 50ms. Usually there will only be 2 or 3 variables involved in any expression. However, I'll need to load approximately 30 into the parser prior to execution. UPDATE 2012/11/5 Update about performance. We implemented nCalc nearly 2 years ago. Since then we've expanded it's use such that we average 40+ expressions covering 300+ variables on post backs. There are now thousands of post backs occurring per second with absolutely zero performance degradation. We've also extended it to include a handful of additional functions, again with no performance loss. In short, nCalc met all of our needs and exceeded our expectations.

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  • Use regular expressions to match an ? but not a \?

    - by J.Milly
    I have a PHP regular expression that has been functioning fairly well to parse some odd legacy client templates until recently when we found an escaped question mark (\?) included in a template expression. I'm not strong enough with my regular expression-fu to wrap my feeble noodle around a negative look ahead or some techno-mumbo-jumbo so, tips or points in the right direction would be greatly appreciated. My PHP: preg_match_all("/\{\{IF (.*)\?(.*):(.*)\}\}/U", $template, $m, PREG_SET_ORDER);

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  • Set User Defined Language Programmatically

    - by wonea
    I've been trying to select the User Defined Language programmatically unsuccessfully through various means, another problem is the files I need to apply the user defined language have no file extension, old DOS files; NPPM_SETCURRENTLANGTYPE (only enumerates built-in languages) Macros don't seem to sense changes with language selection, I was hoping to record a macro then trigger it with NPPExec. Notepad++ accepts only in-built languages for starting from the command line I can't select a UDL as the default language for a new document. ...and my attempts at overriding an in-built language seem to have failed. I've copied details from userDefinedLang.xml to langs.xml don't work. The highlighting doesn't change. Thanks for any help!!

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  • latin bases language segmentation gramatical rules

    - by pravin
    Hi folks, I am working on one feature i.e. to apply language segmentation rules ( grammatical ) for Latin based language ( English currently ). Currently I am in phase of breaking sentences of user input. e.g.: "I am working in language translation". "I have used Google MT API for this" In above example i will break above sentence by full stop (.) This is normal cases where I am breaking sentence on dot, but there are n number of characters for breaking sentence like ( . ! ? etc ). I have following SRX rules for segmentation. Here my question are :- 1) Is there any reference ? which I can use for resolving my language segmentation rules. 2) Or Is there any forums on language segmentation ? , so that i can discuss efficiently Please let me know if anybody know about this ? Thanks a lot.

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  • Django: switch language of message sent from admin panel

    - by yoshi
    I have a model, Order, that has an action in the admin panel that lets an admin send information about the order to certain persons listed that order. Each person has language set and that is the language the message is supposed to be sent in. A short version of what I'm using: from django.utils.translation import ugettext as _ from django.core.mail import EmailMessage lang = method_that_gets_customer_language() body = _("Dear mister X, here is the information you requested\n") body += some_order_information subject = _("Order information") email = EmailMessage(subject, body, '[email protected]', ['[email protected]']) email.send() The customer information about the language he uses is available in lang. The default language is en-us, the translations are in french (fr) and german (de). Is there a way to use the translation for the language specified in lang for body and subject then switch back to en-us? For example: lang is 'de'. The subject and body should get the strings specified in the 'de' translation files.

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  • ANTLR expressions rewrite intermediate tree

    - by user313856
    For expressions like 3+4 I would like to use the value 7 in an intermediate representation tree. I cannot work out how to get the returns value into a rewrite rule. expression returns [int v]: etc. How do I get expression.v into WR? At the moment I get (+ 3 4), I want (7) |^( WRITE c=expression) - ^(WRINT ^(INTC ^($c)) the next step is to emit 7 in an assembler.

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  • Microsoft Outlook hangs when switching input language

    - by Hugo
    Hello, I have two keyboard languages, Swedish and Amerikan English. Normally, I switch language by hitting [alt]+[shift] and it works like a charm. However, suddenly Microsoft Outlook has started to hang whenever I try to switch keyboard input language. Whenever i hit [alt]+[shift] or use the menu to switch language Outlook will hang indefinitely not responding. Why? and what can I do about it? I have English Windows 2000 and Outlook 2003 with the Google Search Desktop plugin.

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  • Forbid language switch for certain application(s)

    - by Vasiliy Borovyak
    I have a problem of accidental input language switch. I tried many different settings in order to not do it - change hotkey, install some software (Key Switcher, Keyboard Ninja, Punto Switcher)... But nothing helped. I used to certain hotkey (Ctrl+Shift). Any other hotkey make me even more suffer. The software s found has no feature to avoid accidental switches. What I want is to find a piece of software which can stick "English US" input language to my "Visual Studio". And any Ctrl+Shift pushes inside VS should not lead to language switch. Have any ideas?

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  • Windows Server Backup 2008 - Language Incompatibilities?

    - by Chris Walters
    I have 2 Windows 2008 Server R2 machines - one is Japanese language based and the other English. When I try to connect from the English language server using Windows Server Backup (snap-in) I get the following message: "An internal error has occurred in the backup engine or the computer that you are connected to remotely is running a version of backup application that is not compatible with the version on your local computer" Both claim to be running Version 1 of Windows Server Backup. Is remote connection to non-identical language server OSs a known problem? Specifically this is seen when attempting the "Connect To Another Server" in the action pane of Windows Server Backup.

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  • Make nginx avoid cache if response contains Vary Accept-Language

    - by gioele
    The cache module of nginx version 1.1.19 does not take the Vary header into account. This means that nginx will serve the same request even if the content of one of the fields specified in the Vary header has changed. In my case I only care about the Accept-Language header, all the others have been taken care of. How can I make nginx cache everything except responses that have a Vary header that contains Accept-Language? I suppose I should have something like location / { proxy_cache cache; proxy_cache_valid 10m; proxy_cache_valid 404 1m; if ($some_header ~ "Accept-Language") { # WHAT IS THE HEADER TO USE? set $contains_accept_language # HOW SHOULD THIS VARIABLE BE SET? } proxy_no_cache $contains_accept_language proxy_http_version 1.1; proxy_pass http://localhost:8001; } but I do not know what is the variable name for "the Vary header received from the backend".

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  • What are the factors affecting a new programming language?

    - by Saurav Sengupta
    I am developing a new general-purpose programming language of my own design. It's currently my own personal project. I have read of some experts saying that new languages do not usually survive (unfortunately I can't find a reference to that right now). What are the most substantial problems that a new language faces? The language syntax is similar to C/Python families, it does not use S-expressions, and it is an imperative language, but I'm doing first-class functions in it to provide the facilities of currying. In particular, I am concentrating on translating the source language to an intermediate language for execution by an interpreter, but I'm not in a position to translate to native code yet. What would be the issues with that? I've not personally used many non-native code languages, so I'm not well aware of the performance issues on today's machines. I also can't decide upon a lexer and parser generator. What would be the pros and cons of Flex and Yacc vs. hand-made? And what benefits will LLVM provide? I need to get the interpreter ready as quickly as possible. Finally, what factors will affect the language's use post release? I am planning a small library of essentials and full documentation for the first phase.

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  • magento - multilingual site + Add store codes to url - want to show flag icons

    - by Mustapha George
    I want to have a multi-language magento site use a flag image instead of a language selector box for user to select language of page. There is a nice article on this at http://www.atwix.com/magento/replace-language-selector-flag-icons/ Only issue is that we use "Add store codes to url" option. I hacked this code, but it can use some refinement and make it more Magento looking. <?php if(count($this->getStores())>1): ?> <div class="form-language"> <div class="langs-wrapper"> <?php foreach ($this->getStores() as $_lang): ?> <?php if ($_lang->getCode() != 'default'): ?> <? $base_url = Mage::getBaseUrl(); // remove language in base url $base_url = str_replace('/en/' , "" , $base_url); $base_url = str_replace('/fr/' , "" , $base_url); $current_url = $this->helper('core/url')->getCurrentUrl(); // take out base url and language code $rest_of_url = str_replace($base_url , "" , $current_url); $rest_of_url = str_replace('/en/' , "" , $rest_of_url); $rest_of_url = str_replace('/fr/' , "" , $rest_of_url); // assmble new url $new_url = $base_url . '/' . $_lang->getCode() . '/' . $rest_of_url; ?> <a class="lang-flag" href="<?php echo $new_url ;?>"><img src="<?php echo $this->getSkinUrl('images/flags/' . $_lang->getCode() . '.png');?>" alt=""></a> <?php endif;?> <?php endforeach;?> </div> </div> <?php endif;?>

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  • Parsing: How to make error recovery in grammars like " a* b*"?

    - by Lavir the Whiolet
    Let we have a grammar like this: Program ::= a* b* where "*" is considered to be greedy. I usually implement "*" operator naively: Try to apply the expression under "*" to input one more time. If it has been applied successfully then we are still under current "*"-expression; try to apply the expression under "*" one more time. Otherwise we have reached next grammar expression; put characters parsed by expression under "*" back into input and proceed with next expression. But if there are errors in input in any of "a*" or "b*" part such a parser will "think" that in position of error both "a*" and "b*" have finished ("let's try "a"... Fail! OK, it looks like we have to proceed to "b*". Let's try "b"... Fail! OK, it looks like the string should have been finished...). For example, for string "daaaabbbbbbc" it will "say": "The string must end at position 1, delete superflous characters: daaaabbbbbbc". In short, greedy "*" operator becomes lazy if there are errors in input. How to make "*" operator to recover from errors nicely?

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