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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
... For those who works with like millions rows and seeks for really performant way to do this - poshest's answer is the way to go. Just dont forget to spice ti up with proper indexing.
– Diligent Key Presser
Jun 20 '19 at 8:46
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Ruby: kind_of? vs. instance_of? vs. is_a?
...metimes. Think @honda.kind_of? Car and @person.is_a? Administrator, Ruby's all about the aesthetics. In fact, notice the grammatical error... with active support you can write @person.is_an? Administrator :)... That might have made it into Ruby core by now, actually.
– rfunduk
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Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
...onsider using a new set of String overloads in Microsoft .NET 2.0. Specifically, data that is designed to be culture-agnostic and linguistically irrelevant should begin specifying overloads using either the StringComparison.Ordinal or StringComparison.OrdinalIgnoreCase members of the new StringCompa...
How can I split a text into sentences?
...sentence_terminator in sentence_terminators:
t_indices = list(find_all(paragraph, sentence_terminator))
possible_endings.extend(([] if not len(t_indices) else [[i, len(sentence_terminator)] for i in t_indices]))
for contraction in contractions:
c_indices = list(find_all(p...
Gradle to execute Java class (without modifying build.gradle)
...ATE
:classes
:execute
I am BOO!
mainClass is a property passed in dynamically at command line. classpath is set to pickup the latest classes.
If you do not pass in the mainClass property, both of the approaches fail as expected.
$ gradle execute
FAILURE: Build failed with an exception.
* Whe...
What is the difference between Pan and Swipe in iOS?
...esture is continuous. It begins (began) when the minimum number of fingers allowed (minimumNumberOfTouches) has moved enough to be considered a pan. It changes (changed) when a finger moves while at least the minimum number of fingers are pressed down. It ends (ended) when all fingers are lifted.
C...
What's the difference between hard and soft floating point numbers?
...t float) in accuracy-critical parts and fast (hard float) in parts where small deviations don't matter.
– PhilLab
May 29 '17 at 12:18
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Echo tab characters in bash script
...
That's because echo -e is not POSIX and make calls /bin/sh which is normally not the program use use interactively, and normally hasn't -e implemented. For portability, use printf '\t' instead.
– Jo So
Oct 5 '12 at 19:02
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Android static object lifecycle
...cation?
The OS starts a process and assigns it a unique process id and allocates a process table.A process start an instance of DVM(Dalvik VM); Each application runs inside a DVM.
A DVM manages class loading unloading, instance lifecycle, GC etc.
Lifetime of a static variable: A static variable...
AngularJS - Access to child scope
...st dispatches events downwards. This might help you to keep things semantically correct.
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