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How is Racket different from Scheme?
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The rationale for the name-change from PLT Scheme to Racket is discussed on the Racket site.
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Clearing purchases from iOS in-app purchase sandbox for a test user
...y, in your tester@gmail.com inbox you will receive two verification emails from Apple to confirm both test accounts.
Say that you have a non-consumable with product ID @"Extra_Levels". Instead of writing @"Extra_Levels" in all methods (requestProduct, purchaseProduct, ...), just write PRODUCT_ID1 an...
Read stream twice
... the contents of the InputStream to a byte array, and then repeatedly read from the byte array using a ByteArrayInputStream. E.g.:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
org.apache.commons.io.IOUtils.copy(in, baos);
byte[] bytes = baos.toByteArray();
// either
while (needToReadA...
What is the attribute property=“og:title” inside meta tag?
...ty in meta tags allows you to specify values to property fields which come from a property library. The property library (RDFa format) is specified in the head tag.
For example, to use that code you would have to have something like this in your <head tag. <head xmlns:og="http://example.org/"...
One-liner to check whether an iterator yields at least one element?
...oblem with this solution is that you can't actually use the returned value from the iterator if it's not empty, right?
– Ken Williams
Jan 3 '17 at 3:55
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What are the performance characteristics of sqlite with very large database files? [closed]
...at is the approach being taken though when the sqlite db has to be rebuilt from scratch, the indexes are created after all the inserts are done.
– Snazzer
May 28 '10 at 17:22
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How can I tell if a library was compiled with -g?
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Employed Russian: from man objdump(1), the --debugging flag "attempts to parse STABS and IEEE debugging format information stored in the file and print it out using a C like syntax. If neither of these formats are found this option falls bac...
RSS Feeds in ASP.NET MVC
...ou want to return rss and set the return type as RssResult. Grab the data from your model based on what you want to return.
Then any request to this action will receive rss of whatever data you choose.
That is probably the quickest and reusable way of returning rss has a response to a request in ...
“unrecognized import path” with go get
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When I followed the go install instructions from the official site (install from the tar file into /usr/local) I received the error above until I changed the GOROOT as above.
– Drew
Apr 10 '14 at 17:38
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how does Array.prototype.slice.call() work?
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@vsync: It isn't an assumption. You can get order from any object if you enforce it. Let's say I have var obj = {2:"two", 0:"zero", 1: "one"}. If we use for-in to enumerate the object, there's no guarantee of order. But if we use for, we can manually enforce the order: for (...