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  • RMagick Rounded Corners

    - by mikeycgto
    Need a simple a way of rounding off an Image. I need the corners to be transparent. This link shows how to do it via command line: http://www.imagemagick.org/Usage/thumbnails/#rounded What I need is the corresponding RMagick\Ruby code... Thanks!

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  • Using CONNECT BY to get all parents and one child in Hierarchy through SQL query in Oracle

    - by s khan
    I was going through some previous posts on CONNECT BY usage. What I need to find is that what to do if I want to get all the parents (i.e, up to root) and just one child for a node, say 4. It seems Like I will have to use union of the following two:- SELECT * FROM hierarchy START WITH id = 4 CONNECT BY id = PRIOR parent union SELECT * FROM hierarchy WHERE LEVEL =<2 START WITH id = 4 CONNECT BY parent = PRIOR id Is there a better way to do this, some workaround that is more optimized?

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  • CSS: content:"\00a0"

    - by SteD
    Today I came across a new CSS syntax that I have never seen before content:"\00a0"; Checking it on w3schools, it explains: Definition and Usage The content property is used with the :before and :after pseudo-elements, to insert generated content. My question is, can you point out to me in real world example, how do we use this 'content' syntax? And what does the \00a0 mean in this case?

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  • How to use T-SQL MERGE in this case?

    - by abatishchev
    I'm new to T-SQL command MERGE so I found a place in my SQL logic where I can use it and want to test it but can't figure out how exatcly should I use it: IF (EXISTS (SELECT 1 FROM commissions_history WHERE request = @requestID)) UPDATE commissions_history SET amount = @amount WHERE request = @requestID ELSE INSERT INTO commissions_history (amount) VALUES @amount) Plase suggest the proper usage. Thanks!

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  • How to use length indicator in a C++ program

    - by cj
    I want to make a program in C++ that reads a file where each field will have a number before it that indicates how long it is. The problem is I read every record in object of a class; how do I make the attributes of the class dynamic? For example if the field is "john" it will read it in a 4 char array. I don't want to make an array of 1000 elements as minimum memory usage is very important.

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  • Looking for industry numbers on source code management

    - by Dave Duchene
    I'm looking for statistics on SCM usage, in particular I'm trying to find out what percentage of their time developers spend on SCM-related tasks. The more detailed the breakdown, the better. Online and offline resources would both be tremendously useful to me. Can anyone point me towards some industry studies? Preferably recent ones?

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  • Visual Studio Solution: static or shared projects?

    - by goodrone
    When a whole project (solution) consists of multiple subprojects (.vcproj), what is a preferable way to tie them: as static libraries or as shared libraries? Assuming that those subprojects are not used elsewhere, the shared libraries approach shouldn't decrease memory usage or load time.

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  • variable argument list in windows va_list

    - by shrikant
    hi, I wanted to have function which will accept as foo(...) { } usage of this would be foo(1,2,3); foo(1) foo(1,2,3,4,5,5,6); va_list can be used but again for that I have to pass foo(int count, ...), as this at run time i dont know how many argument i have. any pointer would be appreciated Thanks

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  • Are there any FREE Xaml Diff/Merge tools available?

    - by Ahikam
    I am searching a free diff tool with support of native syntax and markup for XAML, but failed to find one. I like Altova's DiffDog but it's paid. CodeCompare is an useful tool. It has some worth with its integration into VisualStudio and usage of native editors. It's a perfect solution for XML! However, it does not support XAML editors. Who can recommend a diff tool for XAML?

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  • Merge decorator function as class

    - by SyetemHog
    How to make this merge function as class decorator? def merge(*arg, **kwarg): # get decorator args & kwargs def func(f): def tmp(*args, **kwargs): # get function args & kwargs kwargs.update(kwarg) # merge two dictionaries return f(*args, **kwargs) # return merged data return tmp return func Usage: @other_decorator # return *args and **kwarg @merge(list=['one','two','three']) # need to merge with @other_decorator def test(*a, **k): # get merged args and kwargs print 'args:', a print 'kwargs:', k

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  • What alternatives to __attribute__ exist on 64-bit kernels?

    - by Saifi Khan
    Hi: Is there any alternative to non-ISO gcc specific extension __attribute__ on 64-bit kernels ? Three types that i've noticed are: function attributes, type attributes and variable attributes. eg. i'd like to avoid using __attribute__((__packed__)) for structures passed over the network, even though some gcc based code do use it. Any suggestions or pointers on how to entirely avoid __attribute__ usage in C systems/kernel code ? thanks Saifi.

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  • Why would someone use WHERE 1=1 AND <conditions> in a SQL clause?

    - by Bogdan Maxim
    Why would someone use WHERE 1=1 AND <conditions> in a SQL clause (Either SQL obtained through concatenated strings, either view definition) I've seen somewhere that this would be used to protect against SQL Injection, but it seems very weird. If there is injection WHERE 1 = 1 AND injected OR 1=1 would have the same result as injected OR 1=1. Later edit: What about the usage in a view definition?

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  • using # instead of . in API documentation

    - by landon9720
    In API documentation, and sometimes even used in discussions here on Stack Overflow, I sometimes see the pound (#) character used instead of the dot (.) as the separator between the class name and the method name. For example: Settings#maxPageSize I'm wondering what this usage means, and where it comes from?

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  • The single most useful Emacs feature

    - by Readonly
    My primary editor is Emacs, but my usage habits and knowledge of features has barely changed over the last few years. What are the Emacs features that you use on a daily basis? Are there any little-known Emacs features that you find very useful? Edit: Made this into the recommended poll format...please put one feature per answer from now on.

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  • showing .tif images in matlab

    - by sepideh
    I am trying to show a .tif image in matlab and I use these two line of codes a = imread('C:\Users\sepideh\Desktop\21_15.tif'); imshow(a) that encounters this warning Warning: Image is too big to fit on screen; displaying at 3% In imuitools\private\initSize at 73 In imshow at 262 what is the cause of this warning and what can I do to fix that? the main trouble is it sometimes doesn't show the image and of course even if it shows the image CPU usage gets high that I can't zoom properly

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  • Using many mutex locks

    - by hanno
    I have a large tree structure on which several threads are working at the same time. Ideally, I would like to have an individual mutex lock for each cell. I looked at the definition of pthread_mutex_t in bits/pthreadtypes.h and it is fairly short, so the memory usage should not be an issue in my case. However, is there any performance penalty when using many (let's say a few thousand) different pthread_mutex_ts for only 8 threads?

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  • funny looking comments - c++

    - by Dr Deo
    when i read through source files of opensource projects i often come across some weird phrases in the comments /* @brief ...... @usage..... @remarks.... @par.... */ questions 1.What are they?(were not mentioned when i was learning c++) 2.Do they have any documentation(where)

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