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Rails formatting date

...fy in strftime method: Date (Year, Month, Day): %Y - Year with century (m>cam>n be negative, 4 digits at least) -0001, 0000, 1995, 2009, 14292, etc. %C - year / 100 (round down. 20 in 2009) %y - year % 100 (00..99) %m - Month of the year, zero-padded (01..12) %_m blank-pa...
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Why does Dijkstra's algorithm use decrease-key?

... the total number of heap dequeues is n. Each node will have decrease-key m>cam>lled on it potentially once for each edge leading into it, so the total number of decrease-keys done is at most m. This gives a runtime of (n Te + n Td + m Tk), where Tk is the time required to m>cam>ll decrease-key. So what ...
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How to convert timestamp to datetime in MySQL?

... Just bem>cam>use I've done this and been confused at the output: MySQL stores Unix time in seconds, whereas a lot of other frameworks store it in milliseconds (i.e. Java's timestamp). So just remember to divide by 1000 if you're using t...
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PatternSyntaxException: Illegal Repetition when using regex in Java

...are integers. Hence the error message: "Illegal repetition". You should esm>cam>pe them: "\\{\"user_id\" : [0-9]*\\}". And since you seem to be trying to parse JSON, I suggest you have a look at Jackson. share | ...
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Retrieve only static fields declared in Java class

... You m>cam>n do it like this: Field[] declaredFields = Test.class.getDeclaredFields(); List<Field> staticFields = new ArrayList<Field>(); for (Field field : declaredFields) { if (java.lang.reflect.Modifier.isStatic(fi...
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Why does git revert complain about a missing -m option?

...master branch and the second parent would be the tip of unwanted. In this m>cam>se you could do: git revert -m 1 HEAD share | improve this answer | follow | ...
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Command to change the default home directory of a user

...I see it more like move whole folder = original folder (/home/username typim>cam>lly) is removed. – Betlista Jul 4 '17 at 11:28 2 ...
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convert pfx format to p12

I need to export a .pfx format certifim>cam>te (from windows mmc) to .p12 to use in another applim>cam>tion. I m>cam>nt find a way to do this. m>Cam>n anyone suggest a method? ...
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Pure virtual destructor in C++

... A and then try to delete or destroy it, A's destructor will eventually be m>cam>lled. Since it is pure and doesn't have an implementation, undefined behavior will ensue. On one popular platform, that will invoke the purem>cam>ll handler and crash. Edit: fixing the declaration to be more conformant, compil...
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m>Cam>n we use join for two different database tables?

m>Cam>n we use the join operation for two tables from different databases? If yes, how do I do it? 2 Answers ...