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  • erlang - startup script

    - by demas
    To start my program I do the next sequence: $ erl > c(module1). > c(module2). > c(modulen). modulen:start(). Is there any possibility to create script that allow me to launch my program ?

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  • FLEX: how can I cut the strings longer than N characters

    - by Patrick
    hi, what's the easiest way to cut string in Flex ? I mean, I have a sequence of urls, I want them at most 60 characters length. If they are longer they should be cut and "..." should be added at the end. <mx:LinkButton label="{bookmarksRepeater.currentItem.name}" click="navigateToURL(new URLRequest(event.currentTarget.label.toString()))" /> thanks

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  • Implementation of java.lang.Random in PHP and C

    - by justinhj
    I'm looking for a random number generator that I can run in PHP, C and Java that will always return the same sequence of numbers for a given seed. Here's the Java implementation I would use: java.util.random source Whilst this would be fairly straightforward to port to C and PHP, there is potentially a lot of work to get all the edge cases correct and handle differences in number representation. I'd be extremely happy to just copy and paste a fully tested version should it exist.

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  • Performance Cost of a Memcopy in C/C++

    - by Cenoc
    So whenever I write code I always think about the performance implications. I've often wondered, what is the "cost" of using a memcopy relative to other functions in terms of performance? For example, I may be writing a sequence of numbers to a static buffer and concentrate on a frame within the buffer, in order to keep the frame once I get to the end of the buffer, I might memcopy all of it to the beginning OR I can implement an algorithm to amortize the computation.

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  • How should I smooth the transition between these two states in flex/flashbuilder

    - by Joshua
    I have an item in which has two states, best described as open and closed, and they look like this: and And what I'd like to do is is smooth the transition between one state and the other, effectively by interpolating between the two points in a smooth manner (sine) to move the footer/button-block and then fade in the pie chart. However this is apparently beyond me and after wrestling with my inability to do so for an hour+ I'm posting it here :D So my transition block looks as follows <s:transitions> <s:Transition id="TrayTrans" fromState="*" toState="*"> <s:Sequence> <s:Move duration="400" target="{footer}" interpolator="{Sine}"/> <s:Fade duration="300" targets="{body}"/> </s:Sequence> </s:Transition> <s:Transition> <s:Rotate duration="3000" /> </s:Transition> </s:transitions> where {body} refers to the pie chart and {footer} refers to the footer/button-block. However this doesn't work so I don't really know what to do... Additional information which may be beneficial: The body block is always of fixed height (perhaps of use for the Xby variables in some effects?). It needs to work in both directions. Oh and the Sine block is defined above in declarations just as <s:Sine id="Sine">. Additionally! How would I go about setting the pie chart to rotate continually using these transition blocks? (this would occur without the labels on) Or is that the wrong way to go about it as it's not a transition as such? The effect I'm after is one where the pie chart rotates slowly without labels prior to a selection of a button below, but on selection the rotation stops and labels appear... Thanks a lot in advance! And apologies on greyscale, but I can't really decide on a colour scheme. Any suggestions welcome.

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  • echo "-e" doesn't print anything

    - by wheleph
    I'm using GNU bash, version 3.00.15(1)-release (x86_64-redhat-linux-gnu). And this command: echo "-e" doesn't print anything. I guess this is because "-e" is one of a valid options of echo command because echo "-n" and echo "-E" (the other two options) also produce empty strings. The question is how to escape the sequence "-e" for echo to get the natural output ("-e").

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  • Python: concatenate generator and item

    - by TarGz
    I have a generator (numbers) and a value (number). I would like to iterate over these as if they were one sequence: i for i in tuple(my_generator) + (my_value,) The problem is, as far as I undestand, this creates 3 tuples only to immediately discard them and also copies items in "my_generator" once. Better approch would be: def con(seq, item): for i in seq: yield seq yield item i for i in con(my_generator, my_value) But I was wondering whether it is possible to do it without that function definition

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  • jpa-Google app engine

    - by megala
    I had created entity in google app engie datastore using JPA.I set the id as follows @Id @GeneratedValue(strategy=GenerationType.SEQUENCE) private Long s; After i deployed my applicaiton it give identity (i.e) unique value.but igive 1001,1002,1003 ....as id.But i wnat 1,2,3,4,5 like that.how to achive this? Thanks in advance

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  • Erlang: What are the pros and cons of different methods for avoiding intermediate variables?

    - by erlacher
    At one point while traveling the web, I came across a great page which contrasted the clarity and terseness of different methods of doing a sequence of operations without having to make a bunch of throwaway variables, e.g., Var1, Var2, Var3. It tried list comprehensions, folds, maps, etc. For some reason, now matter what I google, I can't find it again. Anyone have any idea what I'm talking about? Or want to explore the topic anyway?

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  • SQL Server and Identity column

    - by andrew007
    Hi, I just noticed that if I have an identity column in a table, when I insert new rows SQL Server 2008 is automatically filling up the sequence if there are discontinuity. I mean, if in my identity column I have 1,2,5,6 if I insert other two rows in the table the system puts automatically 3,7 in the identity column. Do you know how to control this behavior? THANKS

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  • Redundant code constructs

    - by Diomidis Spinellis
    The most egregiously redundant code construct I often see involves using the code sequence if (condition) return true; else return false; instead of simply writing return (condition); I've seen this beginner error in all sorts of languages: from Pascal and C to PHP and Java. What other such constructs would you flag in a code review?

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  • Getting indices of most recent set of numbers in an array in Matlab?

    - by user2539781
    Let's say I have an array in Matlab: x = [1 1 1 2 2 2 3 3 3 3 2 2 3 3 3 1 1 1 1 1 2 2 2 2 3 3 3] I want the indices of the most recent set of consecutive '1's. In this case, I want the answer: answer = [16 17 18 19 20] % (which should correspond to the last sequence of 1's) I need an automated way to do this in Matlab, that will work with any size arrays, always giving me the indices for the last set of consecutive 1s. Any suggestions?

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  • How to check if the given string is palindrome?

    - by Prakash
    Definition: A palindrome is a word, phrase, number or other sequence of units that has the property of reading the same in either direction How to check if the given string is a palindrome? This was one of the FAIQ [Frequently Asked Interview Question] a while ago but that mostly using C. Looking for solutions in any and all languages possible.

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  • java: converting part of a ByteBuffer to a string

    - by Jason S
    I have a ByteBuffer containing bytes that were derived by String.getBytes(charsetName), where "containing" means that the string comprises the entire sequence of bytes between the ByteBuffer's position() and limit(). What's the best way for me to get the string back? (assuming I know the encoding charset) Is there anything better than the following (which seems a little clunky) byte[] ba = new byte[bbuf.remaining()]; bbuf.get(ba); try { String s = new String(ba, charsetName); } catch (UnsupportedEncodingException e) { /* take appropriate action */ }

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  • Java me : Can we retrieve bluetooth address of connected device from an open slave connection ?

    - by Rohit
    Here is a typical sequence of events that occur : Host device opens a service ( Host device accepts and opens all incoming connections) A remote device connects to host device. Now, we have a slave connection open at host device. At host device, I want to know the bluetooth address of remote device. I can always pass it as data from remote to host device, but can I extract it from connection object somehow without any data transfer? Thanks in advance...

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  • File mode for creating+reading+appending+binary

    - by MihaiD
    I need to open a file for reading and writing. If the file is not found, it should be created. It should also be treated as a binary for Windows. Can you tell me the file mode sequence I need to use for this? I tried 'r+ab' but that doesn't create the files if they are not found. Thanks

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  • Basic question about encryption - what exactly are keys?

    - by Tomas
    Hi, I was browsing and found good articles about encryption. However, none of them described why the key lenght is important and what exactly the key is used for. My guess is that could work this way: 0101001101010101010 Key: 01010010101010010101 //the longer the key, the longer unique sequence XOR or smth: //result Is this at least a bit how it works or I am missing something? Thanks

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  • Java: Converting UTF 8 to String

    - by kujawk
    When I run the following program: public static void main(String args[]) throws Exception { byte str[] = {(byte)0xEC, (byte)0x96, (byte)0xB4}; String s = new String(str, "UTF-8"); } on Linux and inspect the value of s in jdb, I correctly get: s = "ì–´" on Windows, I incorrectly get: s = "?" My byte sequence is a valid UTF-8 character in Korean, why would it be producing two very different results?

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  • how to populate the tables within xmlDataDocument.DataSet

    - by alex
    Hi all: I am working on a C# application that involves using XML schema file as databases for message definitions and XML file as databases for message data. I was following the example I found:http://msdn.microsoft.com/en-us/library/system.xml.xmldatadocument.dataset%28v=VS.100%29.aspx I wrote my own xsd and XML file. I used the same approach in the example, read the xsd file and then load the xml file. But I don't have any "Rows" created for my DataTable. I used debugger to step through my codes. When I am get my DataTable use xmlDataDocument.DataSet.Tables["name of the table"], the Rows property of that tables is 0. Does anybody know what might cause the DataSet tables not get populated after I loaded the xmlDataDocument with XML file? Here is a fragment of XSD file: <?xml version="1.0" encoding="utf-8"?> <xs:schema id="test" targetNamespace="http://tempuri.org/test.xsd" elementFormDefault="qualified" xmlns="http://tempuri.org/test.xsd" xmlns:mstns="http://tempuri.org/test.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" > <xs:element name="reboot_msg"> <xs:complexType> <xs:complexContent> <xs:extension base="header_s"> <xs:sequence> <xs:element name="que_name"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:minLength value="4"/> <xs:maxLength value="8"/> </xs:restriction> </xs:simpleType> </xs:element> <xs:element name="priority" type="xs:unsignedShort"/> </xs:sequence> </xs:extension> </xs:complexContent> </xs:complexType> </xs:element> and here is a fragment of the XML file: <?xml version="1.0" standalone="yes"?> <test xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > <reboot_msg> <message_length>16</message_length> <message_type>7</message_type> <message_sequence>0</message_sequence> <que_name>NONE</que_name> <priority>5</priority> </reboot_msg> It could be the XML and XSD file I created missed something. Please help. Thanks

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  • Increment an index that uses numbers and characters

    - by Martin
    I have a string based code that can be either two or three characters in length and I am looking for some help in creating a function that will increment it. Each 'digit' of the code has a value of 0 to 9 and A to Z. some examples: the first code in the sequence is 000 009 - next code is - 00A 00D - next code is - 00E AAZ - next code is - AB0 the last code is ZZZ. Hope this makes some sense.

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