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  • Java - get index of key in HashMap?

    - by llm
    In java if I am looping over the keySet() of a HashMap, how do I (inside the loop), get the numerical index of that key? Basically, as I loop through the map, I want to be able to get 0,1,2...I figure this would be cleaner than declaring an int and incrementing with each iteration. Thanks.

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  • Detect if a key is bound to something in vim

    - by WishCow
    I'd like to know if there is a way to figure out if a key does something in vim. I know that I can use :map to see user-defined mappings, but is there something for the built-in stuff? For example, I always had CTRL-W bound to close tab, because I thought that it was unused. After half a year, I found out that there are some sequences that use it, like CTRL-W CTRL-S to split the window, and it was a nightmare to retrain myself.

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  • Android change background of key dynamically

    - by Wouter
    I'm building a custom keyboard in android. My input.xml: <com.mykeyboard.MyKeyboardView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/keyboard" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:keyBackground="@drawable/keybg" /> All the keys do have the same background. Now I'm trying to dynamically change the background of one single key. Is this possible?

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  • can I have an abstract base class with the key attribute being generic

    - by Greg
    Hi, I want to create a re-usable library. I was going to use extension methods however I run into some issues in some cases for the client to have to specify in the calling method the types. QUESTION - If I use an abstract base class as the basis, can I specify an attribute/property in the class to be generic (e.g. the key property might be an 'int' in one case, or a 'string' in another)?

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  • get dictionary key by value

    - by loviji
    how to get a Dictionary key by value in C#? Dictionary<string, string> types = new Dictionary<string, string>() { {"1", "one"}, {"2", "two"}, {"3", "three"} }; I want simething like this: getByValueKey(string value); getByValueKey("one") must be return "1". What is the best way do this? may be HashTable, SortedLists?

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  • Python: if key in dict vs. try/except

    - by LeeMobile
    I have a question about idioms and readability, and there seems to be a clash of Python philosophies for this particular case: I want to build dictionary A from dictionary B. If a specific key does not exist in B, then do nothing and continue on. Which way is better? try: A["blah"] = B["blah"] except KeyError: pass or if "blah" in B: A["blah"] = B["blah"] "Do and ask for forgiveness" vs. "simplicity and explicitness". Which is better and why?

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  • perl - getting a value from a map where the key has a dot

    - by imerez
    I have a map in perl which has been dumped into from some legacy code the name of the key has now changed from simply reqHdrs to reqHdrs.bla $rec->{reqHdrs.bla} My problem is now I cant seem to access this field from the map any ideas ? The following is my error Download Script Output: Bareword "reqHdrs" not allowed while "strict subs" in use

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  • [jquery] e.which code for escape key

    - by Shishant
    I have two functions. When enter is pressed the functions runs correctly but when escape is pressed it doesn't. What's the correct number for the escape key? $(document).keypress(function(e) { if (e.which == 13) { $('.save').click(); } // enter (works as expected) if (e.which == 27) { $('.cancel').click(); } // esc (does not work) });

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  • bind key to complete filename wherever the context is in Zsh

    - by lilydjwg
    Sometimes I want a filename instead of what zsh guesses for me. For example, I have a PNG file without a proper .png suffix, which makes zsh think it isn't a picture and won't list it when I type Tab to complete arguments of display. I am wondering if there is a key sequence that completes for a filename wherever the context is, like ^XC for _correct_filename, or how to configure zsh to do the thing?

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  • How to access key itself using javascript

    - by Wondering
    Hi All, I have a json like: var xx= {'name':'alx','age':12}; now i can read the value of name which is 'alx' as xx[0].name, but how to retrieve value of 'name' itself, means how i can fetch Key @ run time. Please let me know if my question is not clear and you guys want more info. Thanks.

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  • disable Opera function key in javascript

    - by DonDon
    I'm writing javascript code for a web emulator containing function keys. The user is able to press keyboard function keys to process something in the emulator, I used stopPropagation and preventDefault javascript function to stop/cancel browsers invoking their function key shortcut (e.g. F1 will invoke Firefox to open its help page) and the code works fine under Firefox and Chrome. But Opera didn't work. I'm using latest Opera 10.5 here. Can anyone help ?

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