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Find a pair of elements from an array whose sum equals a given number
Given array of n integers and given a number X, find all the unique pairs of elements (a,b), whose summation is equal to X.
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twitter bootstrap autocomplete dropdown / combobox with Knockoutjs
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How did you use Select2 to allow text input that was not already included in the datasource?
– compcentral
Apr 30 '13 at 14:42
4
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How to run eclipse in clean mode? what happens if we do so?
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How to use it:
Edit the eclipse.ini file located in your Eclipse install directory and insert -clean as the first line.
Or edit the shortcut you use to start Eclipse and add -clean as the first argument.
Or create a batch or shell script that calls the Eclipse executable with the -clean argu...
How to reverse a 'rails generate'
I want to delete all the files it created and roll back any changes made, but not necessarily to the database, but more to the config files.
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How to get all groups that a user is a member of?
... returns members of a specific group. Is there a cmdlet or property to get all the groups that a particular user is a member of?
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bash: shortest way to get n-th column of output
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Passing an appropriate delimiter to -d allows this to work.
– Yogh
Sep 27 '15 at 22:43
6
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Hidden features of Perl?
What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work?
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Show current assembly instruction in GDB
...x │
│0x7ffff740d769 <__libc_start_main+233> callq *0x18(%rsp) │
>│0x7ffff740d76d <__libc_start_main+237> mov %eax,%edi │
│0x7ffff740d76f <__libc_start_main+239> callq 0x7ffff7427970 <exit> ...
F12 Jump to method -> go back to previous method after making the jump?
I can jump to code if I click in a method name and hit F12. But, is there a keyboard short cut to jump back to the previous code editor location?
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c/c++浮点输出时，不显示小数点后没用的0 - C/C++ - 清泛网 - 专注C/C++及内核技术
...就可以了。%g用来输出实数，它根据数值的大小，自动选f格式或e格式（选择输出时占宽度较小的一种），且不输出无意义的0。即%g是 用%g格式符就可以了。%g用来输出实数，它根据数值的大小，自动选f格式或e格式（选择输出...