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What's the difference between a proc and a lambda in Ruby?
...t;Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lambda {|a, b| puts a**2+b**2 } # => #<Proc:0x15016c@(irb):5 (lambda)>
l.call 1, 2 # => 5
l.call 1 # => ArgumentError: wrong number of ...
Generating a drop down list of timezones with PHP
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I've been reported a bug for the same error as Xeoncross and was wondering if anyone knows how this is possible? The manual seems to indicate that these constants are available since PHP5.2 but is this incorrect?
– brendo
Ap...
What are Maven goals and phases and what is their difference?
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Looks like an illustration error, thanks for noticing (founded it in the web).
– Johnny
Oct 11 '15 at 11:22
3
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App restarts rather than resumes
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I realise it's not meant to - but through trial and error this happens to be the case in my instance. Removing these flags fixes the problem.
– Graeme
Apr 23 '14 at 9:01
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How to save/restore serializable object to/from file?
...}
NOTE: This code hasn't been compiled, let alone run- there may be some errors. Also, this assumes completely out-of-the-box serialization/deserialization. If you need custom behavior, you'll need to do additional work.
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Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
...n async method, by default, results in a compile-time warning; not a build error.
– Dustin Cleveland
May 26 '18 at 14:25
8
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SHA512 vs. Blowfish and Bcrypt [closed]
...of salt, any truly irreversible function reduces the attacker to trial-and-error. And the rate that the attacker can make trials is determined by the speed of that irreversible "hash" algorithm. If a single iteration of a hash function is used, an attacker can make millions of trials per second usin...
Can you configure log4net in code instead of using a config file?
...t;DummyTypeForLog4Net>
let logger = LogManager.GetLogger(aType)
logger.Error(new Exception("exception test"))
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How to make git mark a deleted and a new file as a file move?
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$ mv README.md Rmd # Still? Try the answer I found.
$ git checkout README
error: pathspec 'README' did not match any file(s) known to git.
$ git checkout HEAD README # Ok the answer needed fixing.
$ git status
On branch workit
Changes to be committed:
(use "git reset HEAD <file>..." to unst...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
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Got syntax error at or near "HEADER" LINE 2: delimiter ',' CSV HEADER on aws redshift.
– Mithril
Jan 5 '19 at 9:32
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