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  • A pattern matching an expression that doesn't end with specific sequence

    - by patryk
    I need a regex pattern which matches such strings that DO NOT end with such a sequence: \.[A-z0-9]{2,} by which I mean the examined string must not have at its end a sequence of a dot and then two or more alphanumeric characters. For example, a string /home/patryk/www and also /home/patryk/www/ should match desired pattern and /home/patryk/images/DSC002.jpg should not. I suppose this has something to do with lookarounds (look aheads) but still I have no idea how to make it. Any help appreciated.

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  • Why do we need URIs for XML namespaces?

    - by Patryk
    I am trying to figure out why we need URIs for XML namespaces and I cannot find a purpose for that. Can anyone brighten me a little showing their use on a concrete example? EDIT: Ok so for instance: I have this from w3schools <root xmlns:h="http://www.w3.org/TR/html4/" xmlns:f="http://www.w3schools.com/furniture"> <h:table> <h:tr> <h:td>Apples</h:td> <h:td>Bananas</h:td> </h:tr> </h:table> <f:table> <f:name>African Coffee Table</f:name> <f:width>80</f:width> <f:length>120</f:length> </f:table> </root> So what should http://www.w3schools.com/furniture hold ?

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  • How to change metamode in xorg.conf so that my game in FHD will be displayed only in the external monitor?

    - by Patryk
    I would like to launch my game only in the external monitor which I have attached to my laptop with hdmi cable. This is my current xorg.conf # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 319.60 ([email protected]) Wed Sep 25 15:17:31 PDT 2013 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "metamodes" "1024x786,NULL;1280x720,NULL;NULL,1680x1050;NULL,1920x1080" SubSection "Display" Depth 24 EndSubSection EndSection Although with this config nothing changes (I have my game displayed in the laptop screen and exceeding a little bit onto the external monitor since I set it to be in 1920x1080) I have read this https://help.ubuntu.com/community/XineramaHowTo but with no luck of solving this issue. The only temporary solution for this problem now is to manually switch of the laptop display and then launch the game.

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  • configure: error: Could not find libavformat - part of ffmpeg after installing libav from source

    - by Patryk
    I tried to install minidlna on my machine but it appeared to me that it's not in repositories anymore. Well then I decided to compile it myself. After downloading version 1.1.3 I tried to compile but I needed libav headers which I couldn't install via apt - no idea why there has been a lot of broken packages: $ sudo apt-get install libavcodec-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libavcodec-dev : Depends: libavutil-dev (= 6:9.13-0ubuntu0.14.04.1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Anyways I installed libav 9.13 from source and now I came to this point: $ ./configure ... checking for av_open_input_file in -lavformat... no checking for avformat_open_input in -lavformat... no checking for av_open_input_file in -lavformat... no checking for avformat_open_input in -lavformat... no configure: error: Could not find libavformat - part of ffmpeg but I have installed that! Even in the install log I can see : ... INSTALL libavdevice/libavdevice.a INSTALL libavfilter/libavfilter.a INSTALL libavformat/libavformat.a INSTALL libavresample/libavresample.a INSTALL libavcodec/libavcodec.a INSTALL libswscale/libswscale.a INSTALL libavutil/libavutil.a INSTALL libavdevice/avdevice.h INSTALL libavdevice/version.h INSTALL libavdevice/libavdevice.pc INSTALL libavfilter/avfilter.h INSTALL libavfilter/avfiltergraph.h INSTALL libavfilter/buffersink.h INSTALL libavfilter/buffersrc.h INSTALL libavfilter/version.h INSTALL libavfilter/libavfilter.pc INSTALL libavformat/avformat.h ....

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  • Should pathfinder in A* hold closedSet and openedSet or each object should hold its sets?

    - by Patryk
    I am about to implement A* pathfinding algorithm and I wonder how should I implement this - from the point of view of architecture. I have the pathfinder as a class - I think I will instantiate only one object of this class (or maybe make it a Singleton - this is not so important). The hardest part for me is whether the closedSet and openedSet should be attached to objects that can find the path for them or should be stored in pathfinder class ? I am opened to any hints and critique whatsoever. What is the best practice considering pathfinding in terms of design ?

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  • Can't find openjdk's jre?

    - by Patryk
    I have recently installed openjdk just to try out writing some java application $ dpkg -l | grep jdk ii openjdk-7-jdk 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Development Kit (JDK) ii openjdk-7-jre 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT ii openjdk-7-jre-headless 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT (headless) ii openjdk-7-jre-lib 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime (architecture independent libraries) That's what I have on my system. Although I have all this installed when in Chrome I go to a website which needs jre it can't find it. How can I fix it ?

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  • How to get rid of devices in the right panel of Nautilus ?

    - by Patryk
    I would like to rid of not mounted ntfs partition from Nautilus' right panel ( I just want 352 GB Filesystem - d drive to be there. First of all 352 GB Filesystem is in fact d so I do not know why it is duplicated. Secondly I have put Acer and SYSTEM RESERVED to be nouser mounts on purpose, so that I (or sombody else) will not format it (or else) by accident. So my /etc/fstab looks like this : #comments....... # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 UUID=1384cee0-6a71-4b83-b0d3-1338db925168 / ext4 noatime,errors=remount-ro 0 1 UUID=e3729117-b936-4c1d-9883-aee73dab6729 none swap sw 0 0 #------ MY WINDOWS D DRIVE---------- UUID=98E8B14DE8B12A80 /media/d ntfs defaults,errors=remount-ro,user 0 0 # #-------ACER---------------- UUID=01CBEA9D4476C2F0 /media/acer ntfs defaults,noauto,noexec,ro,nouser 0 0 # #-------SYSTEM RESERVED----- UUID=01CBEA95760F9330 /media/systemreserved ntfs defaults,noauto,noexec,ro,nouser 0 0 #UUID=58F9-C17E /boot/efi vfat defaults 0 1 blkid and fdisk -l [email protected]:/home/YYY# fdisk -l ... Device Boot Start End Blocks Id System /dev/sda1 4096 27262975 13629440 27 Hidden NTFS WinRE /dev/sda2 27262992 27467791 102400 7 HPFS/NTFS/exFAT /dev/sda3 27467792 232267775 102399992 7 HPFS/NTFS/exFAT /dev/sda4 232267793 976771071 372251639+ f W95 Ext'd (LBA) /dev/sda5 232267795 918867967 343300086+ 7 HPFS/NTFS/exFAT /dev/sda6 * 918870016 968044543 24587264 83 Linux /dev/sda7 968046592 976771071 4362240 82 Linux swap / Solaris [email protected]:/home/YYY# blkid /dev/sda1: LABEL="PQSERVICE" UUID="01CBEA95730D28A0" TYPE="ntfs" /dev/sda2: LABEL="SYSTEM RESERVED" UUID="01CBEA95760F9330" TYPE="ntfs" /dev/sda3: LABEL="Acer" UUID="01CBEA9D4476C2F0" TYPE="ntfs" /dev/sda5: UUID="98E8B14DE8B12A80" TYPE="ntfs" /dev/sda6: UUID="1384cee0-6a71-4b83-b0d3-1338db925168" TYPE="ext4" /dev/sda7: UUID="e3729117-b936-4c1d-9883-aee73dab6729" TYPE="swap"

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  • How can I prevent ubuntu from mounting particular partitions/deivices?

    - by Patryk
    I would like to stop Ubuntu from mounting my other (Windows') partitions automatically (since I do not need it really often - and especially I would like not to automount "System reserved" partition for Windows. There is a similar question here How can I stop Ubuntu 12.04 from mounting Fedora 16's Swap Partition? but! I do not have these partitions added in /etc/fstab. How can I do it ? For proof, my /etc/fstab proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda7 during installation UUID=1384cee0-6a71-4b83-b0d3-1338db925168 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda6 during installation UUID=e3729117-b936-4c1d-9883-aee73dab6729 none swap sw 0 0 #------ MY WINDOWS D DRIVE---------- I WANT TO KEP IT UUID=98E8B14DE8B12A80 /media/d ntfs defaults,errors=remount-ro 0 0

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  • Can't find openjdk's jre? No Java plugin in Chrome web browser.

    - by Patryk
    I have recently installed openjdk just to try out writing some java application $ dpkg -l | grep jdk ii openjdk-7-jdk 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Development Kit (JDK) ii openjdk-7-jre 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT ii openjdk-7-jre-headless 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT (headless) ii openjdk-7-jre-lib 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime (architecture independent libraries) That's what I have on my system. Although I have all this installed when in Chrome I go to a website which needs jre it can't find it. How can I fix it ?

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  • Get entities ids from two similar collections using one method

    - by Patryk Roszczyniala
    I've got two lists: List<Integer, ZooEntity> zoos; List<Integer, List<ZooEntity>> groupOfZoos; These operations will return collections of values: Collection<ZooEntity> cz = zoos.values(); Collection<List<ZooEntity>> czList = groupOfZoos.values(); What I want to achieve is to get list of all zoo ids. List<Integer> zooIds = cz ids + czList ids; Of course I can create two methods to do what I want: public List<Integer> getIdsFromFlatList(Collection<ZooEntity> list) { List<Integer> ids = new ArrayList<Integer>(); for (ZooEntity z : list) { ids.add(z.getId()); } return ids; } public List<Integer> getIdsFromNestedList(Collection<List<ZooEntity>> list) { List<Integer> ids = new ArrayList<Integer>(); for (List<ZooEntity> zList : list) { for (ZooEntity z : zList) { ids.add(z.getId()); } } return ids; } As you can see those two methods are very similar and here is my question: Is it good to create one method (for example using generics) which will get ids from those two lists (zoos and groupOfZoos). If yes how it should look like? If no what is the best solution? BTW. This is only the example. I've got very similar problem at job and I want to do it in preety way (I can't change enities, I can change only getIds...() methods).

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  • MySQL Cluster ndb_mgmd error

    - by Patryk
    I set up MySQL Cluster on Ubuntu. My ndb_mgmd.cnf file looked: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.30 Now I want to edit this configuration, so I changed this file: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.25 [MYSQLD] NodeId=5 HostName=192.168.204.26 But ndb_mgm > show; still shows: Connected to Management Server at: localhost:1186 Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=2 (not connected, accepting connect from 192.168.204.25) id=3 (not connected, accepting connect from 192.168.204.26) [ndb_mgmd(MGM)] 1 node(s) id=1 @192.168.204.20 (mysql-5.1.51 ndb-7.1.9) [mysqld(API)] 1 node(s) id=4 (not connected, accepting connect from 192.168.204.30) I tried: sudo /etc/init.d/mysql-ndb-mgm restart sudo ndb_mgmd --initial sudo ndb_mgmd -f /etc/mysql/ndb_mgmd.cnf And nothing works. Any help?

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  • How to copy partition from one disc to another (boot partition keeping all the vital data)?

    - by Patryk
    I have bought a new laptop but the HDD, which runs at 5400 rpm, is not sufficient for me. The laptop runs Windows 7 64-bit. I have my 'old' one (a better one - Seagate Momentus 7200 rpm) and I would like to replace it but without reinstalling everything. And there my question arises: can I copy my boot partition from my laptop hard drive to my old drive so that it will boot from it properly? If so, then how to do it? Will Norton Ghost be useful here? My point would be to just replace this partition and leave the rest.

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  • DataGrid rendering fails

    - by patryk.beza
    I have DataGrid with groups of data. The problem is that after binding data I have strange effect (text was blured by me; the problem are cells' paddings/margins). This effect can be easily 'fixed' by user because after one click on top expander data hides and after second click on the expander, rows in DataGrid are displayed correctly. My XAML code: <DataGrid Name="myDataGrid" Grid.Row="0" ItemsSource="{Binding}" AutoGenerateColumns="False" Background="White" RowBackground="#FBFFFA" AlternatingRowBackground="#EEFAEB" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"> <DataGrid.Columns> <!-- Columns definitions with binding ( . . . ) --> </DataGrid.Columns> <DataGrid.CellStyle> <Style TargetType="{x:Type DataGridCell}"> <Setter Property="Padding" Value="7,3"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type DataGridCell}"> <Border Padding="{TemplateBinding Padding}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True"> <ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" /> </Border> </ControlTemplate> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="DataGridCell.IsSelected" Value="True"> <Setter Property="Background"> <Setter.Value> <LinearGradientBrush EndPoint="0.504,1.5" StartPoint="0.504,0.03"> <GradientStop Color="#008C13" Offset="0"/> <GradientStop Color="#19FF38" Offset="0.8"/> </LinearGradientBrush> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style> </DataGrid.CellStyle> <DataGrid.GroupStyle> <GroupStyle> <GroupStyle.HeaderTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Path=Name}" FontWeight="Bold" Padding="3" /> </StackPanel> </DataTemplate> </GroupStyle.HeaderTemplate> <GroupStyle.ContainerStyle> <Style TargetType="{x:Type GroupItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type GroupItem}"> <Expander> <Expander.Header> <StackPanel Orientation="Horizontal"> <TextBlock Text="Rok " /> <TextBlock Text="{Binding Name}" /> </StackPanel> </Expander.Header> <ItemsPresenter /> </Expander> </ControlTemplate> </Setter.Value> </Setter> </Style> </GroupStyle.ContainerStyle> </GroupStyle> </DataGrid.GroupStyle> </DataGrid> DataGrid's DataContext is set from code (rows with data in DataGrid are displayed after clicking proper button): ICollectionView myView = CollectionViewSource.GetDefaultView(myList); if (operationsView.GroupDescriptions.Count > 0) operationsView.GroupDescriptions.Clear(); operationsView.GroupDescriptions.Add(new PropertyGroupDescription("myGroupDescProperty")); FinancialIncomeOperationsListDataGrid.DataContext = operationsView; Is there any way to manually update layout of the DataGrid? Or maybe there is a better solution?

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  • Why do I get "Illegal characters in path" while using XmlDiff to compare 2 xml files?

    - by Patryk
    I have a problem trying to compare 2 xml files with the XmlDiff library from Microsoft. I am using an overloaded function which passes 2 xmls as strings : xmldiff = new XmlDiff(XmlDiffOptions.IgnoreChildOrder | XmlDiffOptions.IgnorePrefixes | XmlDiffOptions.IgnoreNamespaces); bool identical = xmldiff.Compare(first, last, false); where first and last look more or less like this : <?xml version="1.0" encoding="ISO-8859-1"?> <breakfast_menu> <food> <name>Belgian Waffles</name> <price>$5.95</price> <description>two of our famous Belgian Waffles with plenty of real maple syrup</description> <calories>650</calories> </food> <food> <name>Strawberry Belgian Waffles</name> <price>$7.95</price> <description>light Belgian waffles covered with strawberries and whipped cream</description> <calories>900</calories> </food> </breakfast_menu> And I get this error

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  • PHP preg_replace function returns different values with the same data set

    - by patryk
    I need to use preg_match PHP function. I have a simple pattern to check the string and the thing is as follows: when I run the script at first, it gives me no match (it is supposed to match though) but when I hold F5 in my browser for a while, out of a sudden it says there's a match within the string. As I keep pushing F5, it gives either true or false. Say the pattern is /^(.*)\/[A-Za-z0-9]*$/ (I guess it's not the best way but still) and the subject is galeria/zdjecia/. I believe preg_match should return true with this set of data. Note that the data does not change when pressing F5. Why is that?

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