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What makes Scala's operator overloading “good”, but C++'s “bad”?
...tion)
The overloaded versions can return anything (This is where the abuse sets in, If your operators start to return some arbitrator type the user was not expecting things go down hill).
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How to remove all whitespace from a string?
...i is built upon the platform-independent ICU library, and has an extensive set of string manipulation functions. The equivalents of the above are:
library(stringi)
stri_replace_all_fixed(x, " ", "")
stri_replace_all_charclass(x, "\\p{WHITE_SPACE}", "")
Here "\\p{WHITE_SPACE}" is an alternate syn...
How can I reverse a NSArray in Objective-C?
...gure out why my A* algorithm was broken. It's because it returns the wrong set!
– Georg Schölly
Mar 12 '10 at 6:23
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How to generate the “create table” sql statement for an existing table in postgreSQL
...database itself. -U stands for username. My pgadmin user has no password set, so I don't have to put in a password. The -t option means specify for one table. --schema-only means print only data about the table, and not the data in the table. Here is the exact command I use:
pg_dump -U pgadmin...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
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Efficient way to remove ALL whitespace from String?
... on the size of the input string. Therefore, I have tested with two result sets. In the fastest method, the linked source has a even faster way. But, since it is characterized as unsafe I have left this out.
Long input string results:
InPlaceCharArray: 2021 ms (Sunsetquest's answer) - (Original s...
Using group by on multiple columns
...se is used in conjunction with the aggregate functions to group the result-set by one or more columns. e.g.:
SELECT column_name, aggregate_function(column_name)
FROM table_name
WHERE column_name operator value
GROUP BY column_name;
Remember this order:
SELECT (is used to select data from a databa...
How to remove indentation from an unordered list item?
I want to remove all indentation from ul . I tried setting margin , padding , text-indent to 0 , but no avail. Seems that setting text-indent to a negative number does the trick - but is that really the only way to remove the indentation?
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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
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In Python, what is the difference between “.append()” and “+= []”?
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just to set things straight: += gives a better performance than extend or append as long as your input is in the right format. What takes time in the current example is the creation of the ['something'] list. += is about 15% faster
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