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Why is a 3-way merge advantageous over a 2-way merge?

... The essential logic of a three-way merge tool is simple: Compare base, source, and target files Identify the "chunks" in the source and target files file: Chunks that don't match the base Chunks that do match the base Then, put together a merged result consisting of: ...
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Type erasure techniques

... so, if the shared_ptr then stores a Derived *, but the Base * did not declare the destructor as virtual, shared_ptr<void> still works as intended, since it never even knew about a base class to begin with. Cool! – TamaMcGlinn May 30 '1...
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How to change the ROOT application?

...t from the bin directory (sh startup.sh). Leave your war file in $CATALINA_BASE/webapps under its original name. Turn off autoDeploy and deployOnStartup in your Host element in the server.xml file. Explicitly define all application Contexts in server.xml, specifying both the path and docBase attri...
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Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?

...ystems use different programs. apt and its derivatives are used on Debian based linux systems. Red Hat-ish Linux systems use rpm (or at least they did many, many, years ago). yum is also a package manager for RedHat based systems. Alpine based systems use apk. Warning As of 25 April 2016, homebrew...
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How to convert from System.Enum to base integer?

... Also, using an extension method can add consistency to your code base. Since, as @nawfal pointed, out there are several ways that you can get the int value from an enum, creating an extension method and enforcing its use means that your every time you get the int value of an enum you are ...
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How to get the difference between two arrays in JavaScript?

...not, you need to change the for loop to a for .. in loop. function arr_diff (a1, a2) { var a = [], diff = []; for (var i = 0; i < a1.length; i++) { a[a1[i]] = true; } for (var i = 0; i < a2.length; i++) { if (a[a2[i]]) { delete a[a2...
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Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF

...e like this so that you can specify your own identity values. SET IDENTITY_INSERT Table1 ON INSERT INTO Table1 /*Note the column list is REQUIRED here, not optional*/ (OperationID, OpDescription, FilterID) VALUES (20, 'Hierachy Update', ...
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The simplest way to comma-delimit a list?

.../trunk/src/java/org/… The join method has 9 overloadings. The iteration-based ones are like "Sample solution 3"; the index-based ones use: if (i > startIndex) { <add separator> } – 13ren Mar 21 '09 at 11:15 ...
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Html table tr inside td

...ited May 12 '14 at 17:37 katalin_2003 62911 gold badge1212 silver badges2626 bronze badges answered Jun 13 '13 at 14:00 ...
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How do I use boolean variables in Perl?

...n true and false, so not only does it have booleans, it has true (!0 aka PL_sv_yes) and false (!1 aka PL_sv_no). Or are you saying Perl should croak whenever something other than these two values are tested for truthness? That would be completely awful. e.g. It would prevent $x ||= $default; ...