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Get Base64 encode file-data from Input Form
...other voodoo magic before you upload.
There are two methods:
Convert to string and use the built-in btoa or similar
I haven't tested all cases, but works for me- just get the char-codes
Convert directly from a Uint8Array to base64
I recently implemented tar in the browser. As part of that p...
How to count the number of files in a directory using Python
...mport os
onlyfiles = next(os.walk(dir))[2] #dir is your directory path as string
print len(onlyfiles)
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How to set JAVA_HOME in Linux for all users
...re, this is a simple replacement of matching text from input with an empty string. The "default" character for replacements is the /, but as long as you're consistent, you can replace the / with anything. In this case it's colons as we use / for path separators.
– Ungeheuer
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Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
...ique sequences of bytes. UUID is a good candidate but UUID.randomUUID().toString() generates stuff like 44e128a5-ac7a-4c9a-be4c-224b6bf81b20 which is good, but I would prefer dash-less string.
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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
...= Copy(obj[k], use_deepcopy)
elif t in dignore:
# Numeric or string/unicode?
# It's immutable, so ignore it!
pass
elif use_deepcopy:
obj = deepcopy(obj)
return obj
if __name__ == '__main__':
import copy
from time import time
num_times =...
Why is “import *” bad?
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How about inside a doctest string? Does the import * get interpreted inside a "sandbox" in this case? Thanks.
– PatrickT
May 13 at 9:18
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Remove NA values from a vector
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?max shows you that there is an extra parameter na.rm that you can set to TRUE.
Apart from that, if you really want to remove the NAs, just use something like:
myvec[!is.na(myvec)]
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Spring RestTemplate - how to enable full debugging/logging of requests/responses?
... : {}", request.getHeaders() );
log.debug("Request body: {}", new String(body, "UTF-8"));
log.info("==========================request end================================================");
}
private void traceResponse(ClientHttpResponse response) throws IOException {
...
Reading a plain text file in Java
...ad this wonderful (yet free) book called Thinking In Java
In Java 7:
new String(Files.readAllBytes(...))
(docs)
or
Files.readAllLines(...)
(docs)
In Java 8:
Files.lines(..).forEach(...)
(docs)
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Regex to check whether a string contains only numbers [duplicate]
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@vsync, because \d in a single quoted string is the letter 'd'. Try running '/^\d+$/' === '/^d+$/' in your JavaScript console. You need to double-escape when embedding a RegExp in a string: eval('/^\\d+$/')
– Mike Samuel
O...