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How do I do base64 encoding on iOS?
I'd like to do base64 encoding and decoding, but I could not find any support from the iPhone SDK . How can I do base64 encoding and decoding with or without a library?
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Extract a substring according to a pattern
...we create a data frame with two columns, one for the part before the colon and one for after, and then extract the latter.
library(dplyr)
library(tidyr)
library(purrr)
DF <- data.frame(string)
DF %>%
separate(string, into = c("pre", "post")) %>%
pull("post")
## [1] "E001" "E002" "E00...
Reduce, fold or scan (Left/Right)?
... operator's two arguments). This way we can cumulate a result.
reduceLeft and reduceRight cumulate a single result.
foldLeft and foldRight cumulate a single result using a start value.
scanLeft and scanRight cumulate a collection of intermediate cumulative results using a start value.
Accumulate...
Convert string to number and add one
I want to turn the value I get from the id into a number and add one to it then pass the new value into the dosomething() function to use. When I tried this and the value is one I get back 11 not 2.
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Find if current time falls in a time range
...ount the number of matches? For example I want to count how many saturdays and sundays are in the range.
– pbies
Sep 4 '13 at 19:28
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Mismatch Detected for 'RuntimeLibrary'
I downloaded and extracted Crypto++ in C:\cryptopp. I used Visual Studio Express 2012 to build all the projects inside (as instructed in readme), and everything was built successfully. Then I made a test project in some other folder and added cryptolib as a dependency. After that, I added the includ...
Flat file databases [closed]
...gt; array("dubayou.com","willwharton.com","codecream.com"),
"and_one" => "more");
and to save or update the db record for that user.
$dir = "../userdata/"; //make sure to put it bellow what the server can reach.
file_put_contents($dir.$user['name'],serialize($user));
and to lo...
How can I add new keys to a dictionary?
...y by assigning a value
to that key. If the key doesn't exist, it's added and points to that
value. If it exists, the current value it points to is overwritten.
—R. Navega
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Using reCAPTCHA on localhost
I'm developing a website using PHP and I want to make a human verification in one of the sessions. For the development, I'm initially running the system locally and when it is ready, I'm gonna make put it on in a certain domain.
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Changing Java Date one hour back
...ary of the fact that there is Calendar.HOUR which works with 12 hour clock and Calendar.HOUR_OF_DAY for 24 hour clock: chintat.blogspot.ca/2006/05/…
– Wolf
Apr 27 '15 at 17:24
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