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What exactly does the .join() method do?
...d by .join() which I have read is the preferred method for concatenating strings.
9 Answers
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Regular Expression to match only alphabetic characters
I was wondering If I could get a regular expression which will match a string that only has alphabetic characters, and that alone.
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What is a unix command for deleting the first N characters of a line?
... be the best tool for this as it can both filter and perform the necessary string manipulation functions on filtered lines:
tail -f logfile | awk '/org.springframework/ {print substr($0, 6)}'
or
tail -f logfile | awk '/org.springframework/ && sub(/^.{5}/,"",$0)'
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In Functional Programming, what is a functor?
...llection. The type of the full collection is then something like T Int, T String, T Bool, if you are containing integers, strings, or Booleans respectively. If the element type is unknown, it is written as a type parameter a, as in T a.
Examples include lists (zero or more elements of type a), th...
How can we prepend strings with StringBuilder?
I know we can append strings using StringBuilder . Is there a way we can prepend strings (i.e. add strings in front of a string) using StringBuilder so we can keep the performance benefits that StringBuilder offers?
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What do single quotes do in C++ when used on multiple characters?
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It's a multi-character literal. 1952805748 is 0x74657374, which decomposes as
0x74 -> 't'
0x65 -> 'e'
0x73 -> 's'
0x74 -> 't'
Edit:
C++ standard, §2.14.3/1 - Character literals
(...) An ordinary character literal that conta...
MySQL, Check if a column exists in a table with SQL
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@Mfoo Thanks Mfoo, you saved my day! Works like charm. One of the best solutions apart from creating Procedures for this task.
– webblover
Feb 14 '14 at 17:49
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Convert a byte array to integer in Java and vice versa
...andatory indeed. byte b = 0; b |= 0x88; System.out.println(Integer.toString(b, 16)); //Output: -78 System.out.println(Integer.toString(b & 0xFF, 16)); //Output: 88
– HBN
Dec 6 '14 at 17:54
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HTTPS connections over proxy servers
... proxy.
*/
public class ClientExecuteSOCKS {
public static void main(String[] args) throws Exception {
Registry<ConnectionSocketFactory> reg = RegistryBuilder.<ConnectionSocketFactory>create()
.register("http", new MyHTTPConnectionSocketFactory())
.r...
Javascript calculate the day of the year (1 - 366)
... that for 0-based month values, one just needs to remove the -- from --m.
Extra:
Note, don't use this day's per month algorithm if you need just max day's per month. In that case there is a more efficient algorithm (because we only need leepYear when the month is February) I posted as answer this q...