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Adding 'serial' to existing column in Postgres

... b text); INSERT INTO foo (a, b) SELECT i, 'foo ' || i::text FROM generate_series(1, 5) i; INSERT INTO bar (b) SELECT 'bar ' || i::text FROM generate_series(1, 5) i; -- blocks of commands to turn foo into bar CREATE SEQUENCE foo_a_seq; ALTER TABLE foo ALTER COLUMN a SET DEFAULT nextval('foo_a_seq'...
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How to convert std::string to lower case?

...thm/string.hpp> std::string str = "HELLO, WORLD!"; boost::algorithm::to_lower(str); // modifies str Or, for non-in-place: #include <boost/algorithm/string.hpp> const std::string str = "HELLO, WORLD!"; const std::string lower_str = boost::algorithm::to_lower_copy(str); ...
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Google Authenticator implementation in Python

...m/tadeck/onetimepass). import hmac, base64, struct, hashlib, time def get_hotp_token(secret, intervals_no): key = base64.b32decode(secret, True) msg = struct.pack(">Q", intervals_no) h = hmac.new(key, msg, hashlib.sha1).digest() o = ord(h[19]) & 15 h = (struct.unpack("&g...
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How do I encode and decode a base64 string?

....GetBytes(text)).TrimEnd('=').Replace('+', '-') .Replace('/', '_'); } public static string Decode(string text) { text = text.Replace('_', '/').Replace('-', '+'); switch (text.Length % 4) { case 2: text += "=="; ...
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What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i

...that @Scott Lowe already said this above.) – fearless_fool Dec 26 '11 at 19:33 280 ...
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What is simplest way to read a file into String? [duplicate]

...: new String(Files.readAllBytes(Paths.get(filePath)), StandardCharsets.UTF_8); Where filePath is a String representing the file you want to load. share | improve this answer | ...
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Passing command line arguments from Maven as properties in pom.xml

... </activation> <properties> <build_os>linux</build_os> <build_ws>gtk</build_ws> <build_arch>x86_64</build_arch> </properties> </profile> <profile> <id>wi...
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How to convert IPython notebooks to PDF and HTML?

... Everything was collapsed into one page -__- – htafoya May 2 '18 at 22:23 2 ...
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How to find keys of a hash?

... You could use Underscore.js, which is a Javascript utility library. _.keys({one : 1, two : 2, three : 3}); // => ["one", "two", "three"] share | improve this answer | ...
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Ensure that HttpConfiguration.EnsureInitialized()

...elow for the correct way to handle this now. At the end of the Application_Start method in Global.Asax.cs try adding:- GlobalConfiguration.Configuration.EnsureInitialized(); share | improve this...