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Ruby max integer

...ts (integers small enough to store in a single machine word), you can call 0.size to get the number of bytes. I would guess it should be 4 on 32-bit builds, but I can't test that right now. Also, the largest Fixnum is apparently 2**30 - 1 (or 2**62 - 1), because one bit is used to mark it as an inte...
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Can I multiply strings in Java to repeat sequences? [duplicate]

...es is the following one-liner: new String(new char[generation]).replace("\0", "-") Replace generation with number of repetitions, and the "-" with the string (or char) you want repeated. All this does is create an empty string containing n number of 0x00 characters, and the built-in String#repla...
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How to calculate date difference in JavaScript?

...icktoofay 114k1717 gold badges222222 silver badges220220 bronze badges 41 ...
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How to write a Ruby switch statement (case…when) with regex and backreferences?

... groups are always stored in pseudo variables $1 to $9: case foo when /^([0-9][0-9])/ print "the month is #{$1}" else print "something else" end You can also use the $LAST_MATCH_INFO pseudo variable to get at the whole MatchData object. This can be useful when using named captures: case ...
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MongoDB: How to query for records where field is null or not set?

... | edited Aug 31 '16 at 0:31 answered May 14 '12 at 21:55 ...
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How to sort with a lambda?

...| edited Feb 25 '11 at 23:06 answered Feb 25 '11 at 22:51 B...
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How to remove last n characters from every element in the R vector

... answered May 1 '14 at 17:50 nfmcclurenfmcclure 2,25711 gold badge1919 silver badges3535 bronze badges ...
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stash@{1} is ambiguous?

I'm trying to get info about my stash, but git is telling me that stash@{0} and stash@{1} are ambiguous. git stash list works fine, and .git/logs/refs/stash seems to have the appropriate content (not that I'm an expert on git internals). ...
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Determine if an object property is ko.observable

I'm using KnockoutJS version 2.0.0 4 Answers 4 ...
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Why does running the Flask dev server run itself twice?

...o away, but then you also lose the reloading functionality: app.run(port=4004, debug=config.DEBUG, host='0.0.0.0', use_reloader=False) You can disable the reloader when using the flask run command too: FLASK_DEBUG=1 flask run --no-reload You can look for the WERKZEUG_RUN_MAIN environment varia...