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Read binary file as string in Ruby
...red Sep 25 '08 at 1:30
David NehmeDavid Nehme
20.3k66 gold badges7272 silver badges113113 bronze badges
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How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
Find and extract a number from a string
I have a requirement to find and extract a number contained within a string.
29 Answers
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grep using a character vector with multiple patterns
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In addition to @Marek's comment about not including fixed==TRUE, you also need to not have the spaces in your regular expression. It should be "A1|A9|A6".
You also mention that there are lots of patterns. Assuming that they are in a vector
toMatc...
Find out time it took for a python script to complete execution
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from datetime import datetime
startTime = datetime.now()
#do something
#Python 2:
print datetime.now() - startTime
#Python 3:
print(datetime.now() - startTime)
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Java: convert List to a String
...you want to join a Collection of Strings you can use the new String.join() method:
List<String> list = Arrays.asList("foo", "bar", "baz");
String joined = String.join(" and ", list); // "foo and bar and baz"
If you have a Collection with another type than String you can use the Stream API w...
Disable activity slide-in animation when launching new activity?
...to disable or override the "back" animation as well, override the finish() method in your activity and put that call in there along with a call to super.finish(). Problem solved.
– Grishka
Mar 5 '16 at 14:49
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Why is processing a sorted array slower than an unsorted array?
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When you are using the unsorted list all tuples are accessed in memory-order. They have been allocated consecutively in RAM. CPUs love accessing memory sequentially because they can speculatively request the next cache line so it will always be present when needed.
When you are sorting t...
How would Git handle a SHA-1 collision on a blob?
...a commit, and get very very unlucky: one of the blobs ends up having the same SHA-1 as another that is already in your repository. Question is, how would Git handle this? Simply fail? Find a way to link the two blobs and check which one is needed according to the context?
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