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PatternSyntaxException: Illegal Repetition when using regex in Java
...are integers. Hence the error message: "Illegal repetition".
You should esm>ca m>pe them: "\\{\"user_id\" : [0-9]*\\}".
And since you seem to be trying to parse JSON, I suggest you have a look at Jackson.
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Rails formatting date
...fy in strftime method:
Date (Year, Month, Day):
%Y - Year with century (m>ca m>n be negative, 4 digits at least)
-0001, 0000, 1995, 2009, 14292, etc.
%C - year / 100 (round down. 20 in 2009)
%y - year % 100 (00..99)
%m - Month of the year, zero-padded (01..12)
%_m blank-pa...
Why does Dijkstra's algorithm use decrease-key?
... the total number of heap dequeues is n. Each node will have decrease-key m>ca m>lled on it potentially once for each edge leading into it, so the total number of decrease-keys done is at most m. This gives a runtime of (n Te + n Td + m Tk), where Tk is the time required to m>ca m>ll decrease-key.
So what ...
How to convert timestamp to datetime in MySQL?
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Just bem>ca m>use I've done this and been confused at the output: MySQL stores Unix time in seconds, whereas a lot of other frameworks store it in milliseconds (i.e. Java's timestamp). So just remember to divide by 1000 if you're using t...
Retrieve only static fields declared in Java class
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You m>ca m>n do it like this:
Field[] declaredFields = Test.class.getDeclaredFields();
List<Field> staticFields = new ArrayList<Field>();
for (Field field : declaredFields) {
if (java.lang.reflect.Modifier.isStatic(fi...
Why does git revert complain about a missing -m option?
...master branch and the second parent would be the tip of unwanted.
In this m>ca m>se you could do:
git revert -m 1 HEAD
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Command to change the default home directory of a user
...I see it more like move whole folder = original folder (/home/username typim>ca m>lly) is removed.
– Betlista
Jul 4 '17 at 11:28
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m>Ca m>n we use join for two different database tables?
How to get rid of punctuation using NLTK tokenizer?
... I get a list of words and punctuation. I need only the words instead. How m>ca m>n I get rid of punctuation? Also word_tokenize doesn't work with multiple sentences: dots are added to the last word.
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Override Python's 'in' operator?
...the interpreter becomes undownloadable. And it isn't a link-only answer; I m>ca m>me to this page looking for the answer and found it without clicking on any further links (i.e. the prototype was sufficient). I do agree in principle, but imho that doesn't apply here.
– wizzwizz4
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