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Understanding promises in Node.js
...endency chains (do Promise C only when Promise A and Promise B complete).
By removing them from the core node.js, it created possibility of building up modules with different implementations of promises that can sit on top of the core. Some of these are node-promise and futures.
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Apache Spark: map vs mapPartitions?
...rts each element of the source RDD into a single element of the result RDD by applying a function. mapPartitions converts each partition of the source RDD into multiple elements of the result (possibly none).
And does flatMap behave like map or like mapPartitions?
Neither, flatMap works on a s...
Understanding Python's “is” operator
...ually wrong! Thanks for pointing that out @martijn-pieters ! I should know by now never to post code without testing it! >>> x=1.0; y=1.0 >>> x is y True >>> x=1.0 >>> y=1.0 >>> x is y False
– Magnus Lyckå
Sep 26 '...
URL: Username with @
...tains an @ too, which is increasingly likely with random passwords created by password managers.
– Adambean
Nov 4 '18 at 23:19
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How can I tell when HttpClient has timed out?
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How can I tell if TaskCanceledException is caused by HTTP timeout and not, say direct cancellation or other reason?
– UserControl
Mar 26 '14 at 5:51
8
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How can I hash a password in Java?
...6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("password".toCharArray(), salt, 65536, 128);
SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
byte[] hash = f.generateS...
Mockito: Stubbing Methods That Return Type With Bounded Wild-Cards
...xcept that I made it slightly more generic, because my error wasn't caused by a java.util.List, but the com.google.common.base.Optional. My little helper method therefore allows for any type T and not just List<T>:
public static <T> Answer<T> createAnswer(final T value) {
Answ...
S3 Static Website Hosting Route All Paths to Index.html
...ith the deployment strategy. Writing a small js to redirect is kind of shabby approach. Also, the number of redirects is a problem too. I am trying to figure if there is a way for all S3 urls to point to index.html always.
– moha297
Feb 12 '16 at 3:24
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How do you dismiss the keyboard when editing a UITextField
... the return button is to add a line return and keep the keyboard onscreen. By returning NO you avoid adding a line return to the text.
– kubi
Feb 20 '19 at 23:53
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Difference between matches() and find() in Java Regex
...calling .find() more than once may have different results if not preceeded by reset(), while matches() will always return same result. See my answer below.
– L. Holanda
Nov 20 '15 at 22:35
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