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Can Java 8 code be compiled to run on Java 7 JVM?
...code with Java 7, so that's also compatible. You can get access to them by reading the bytecode of the method and looking at the local variable names in the method's debug information. For example the Spring Framework does exactly that to implement @PathVariable, so there is probably a library metho...
Enabling ProGuard in Eclipse for Android
...rties file in the project home directory. However, on opening this file, I read at the top:
5 Answers
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How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
...alled (using 'pip', or distutils) in system-dependent paths which Python already knows about.
Have a read of https://the-hitchhikers-guide-to-packaging.readthedocs.org/en/latest/ - 'The Hitchhiker's Guide to Packaging', and also http://docs.python.org/3/tutorial/modules.html - which explains PYTHON...
Get real path from URI, Android KitKat new storage access framework [duplicate]
...(..)) to query MediaStore.Images.Media.EXTERNAL_CONTENT_URI. Perhaps, just read the else if (TYPE_IMAGE.equals(ident.type)) block.
– Vikram
Dec 10 '13 at 0:09
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How much overhead does SSL impose?
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Enabling SSL sessions is server-specific. Read the manual for your server.
– erickson
Oct 29 '10 at 18:32
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When & why to use delegates? [duplicate]
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I agree with everything that is said already, just trying to put some other words on it.
A delegate can be seen as a placeholder for a/some method(s).
By defining a delegate, you are saying to the user of your class, "Please feel free to assign, any method that ...
What exactly is Arel in Rails 3.0?
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Excellant answer. I had read the link you posted and followed it for the most part. In fact the comp sci part made sense but how it was incorporated into rails was where I was having the problems. It makes much more sense to me that it replaces the ...
Adding 'serial' to existing column in Postgres
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TL;DR
Here's a version where you don't need a human to read a value and type it out themselves.
CREATE SEQUENCE foo_a_seq OWNED BY foo.a;
SELECT setval('foo_a_seq', coalesce(max(a), 0) + 1, false) FROM foo;
ALTER TABLE foo ALTER COLUMN a SET DEFAULT nextval('foo_a_seq');
Anothe...
Find XOR of all numbers in a given range
... last year in university. Fun days. What came to my mind immediately after reading this is this XKCD comic.
– Sean Francis N. Ballais
Jan 18 '17 at 13:40
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Why do we use Base64?
... a GIF image is encoded in base64 as a chunk of an email. The email client reads the headers and decodes it. Because of the encoding, we can be sure the GIF doesn't contain anything that may be interpreted as protocol and we avoid inserting data that SMTP or POP may find significant.
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