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What exactly does git's “rebase --preserve-merges” do (and why?)

...B --not $(git merge-base --all A B) Replay the commits: Create a branch B_new, on which to replay our commits. Switch to B_new (i.e. "git checkout B_new") Proceeding parents-before-children (--topo-order), replay each commit c in C on top of B_new: If it's a non-merge commit, cherry-pick a...
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What is the $? (dollar question mark) variable in shell scripting? [duplicate]

...al Parameters" http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_05_02 : ? Expands to the decimal exit status of the most recent pipeline (see Pipelines). man bash "Special Parameters": The shell treats several parameters specially. These parameters may only be refe...
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Ruby: Easiest Way to Filter Hash Keys?

...with just the choices in it. choices = params.select { |key, value| key.to_s.match(/^choice\d+/) } or you can use delete_if and modify the existing Hash e.g. params.delete_if { |key, value| !key.to_s.match(/choice\d+/) } or if it is just the keys and not the values you want then you can do: p...
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Set Focus on EditText

...Focus()) { getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); } EDIT: Adding extra info to the answer after the checkLiganame method was added. In the checkLiganame method you check if the cursor is null. The cursor will always return an object, so the c...
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Change Bootstrap input focus blue glow

...put-border-focus variable. See the commit for more info and warnings. In _variables.scss update @input-border-focus. To modify the size/other parts of this glow modify the mixins/_forms.scss @mixin form-control-focus($color: $input-border-focus) { $color-rgba: rgba(red($color), green($color), ...
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Spring Cache @Cacheable - not working while calling from another method of the same bean

...e the AspectJ solution. @Service @Scope(proxyMode = ScopedProxyMode.TARGET_CLASS) class AService { private final AService _aService; @Autowired public AService(AService aService) { _aService = aService; } @Cacheable("employeeData") public List<EmployeeData> ...
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Cleaner way to do a null check in C#? [duplicate]

...n(string[] args) { Person nullPerson = null; var isNull_0 = nullPerson.IsNull(p => p.contact.address.city); var isNull_1 = new Person().IsNull(p => p.contact.address.city); var isNull_2 = new Person { contact = new Contact() }.IsNull(p => p.contact.addres...
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Algorithm for creating a school timetable

...s heuristic. I named it "recursive swapping". Input: a set of activities A_1...A_n and the constraints. Output: a set of times TA_1...TA_n (the time slot of each activity. Rooms are excluded here, for simplicity). The algorithm must put each activity at a time slot, respecting constraints. Each TA...
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What is the difference between log4net and ELMAH?

...,error) with log4net but store it in ELMAH nuget.org/packages/elmahappender_log4net_1.2.10 – Sturla Feb 18 '14 at 16:21 add a comment  |  ...
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How to fix HTTP 404 on Github Pages?

... In my case, I had folders whose names started with _ (like _css and _js), which GH Pages ignores as per Jekyll processing rules. If you don't use Jekyll, the workaround is to place a file named .nojekyll in the root directory. ...