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Base64 length calculation?
After reading the base64 wiki ...
15 Answers
15
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what's the correct way to send a file from REST web service to client?
...
I don't recommend encoding binary data in base64 and wrapping it in JSON. It will just needlessly increase the size of the response and slow things down.
Simply serve your file data using GET and application/octect-streamusing one of the factory methods of javax.ws....
Usage of __slots__?
...lare a particular slot one time in an inheritance tree. For example:
class Base:
__slots__ = 'foo', 'bar'
class Right(Base):
__slots__ = 'baz',
class Wrong(Base):
__slots__ = 'foo', 'bar', 'baz' # redundant foo and bar
Python doesn't object when you get this wrong (it probably...
Python Pandas: Get index of rows which column matches certain value
...] returns the ith row of df. i does not refer to the index label, i is a 0-based index.
In contrast, the attribute index returns actual index labels, not numeric row-indices:
df.index[df['BoolCol'] == True].tolist()
or equivalently,
df.index[df['BoolCol']].tolist()
You can see the difference ...
Use HTML5 to resize an image before upload
...vert a canvas to a BLOB */
var dataURLToBlob = function(dataURL) {
var BASE64_MARKER = ';base64,';
if (dataURL.indexOf(BASE64_MARKER) == -1) {
var parts = dataURL.split(',');
var contentType = parts[0].split(':')[1];
var raw = parts[1];
return new Blob([raw],...
How do I find which rpm package supplies a file I'm looking for?
...86_64 : The GNU versions of grep pattern matching utilities.
Repo : base
Matched from:
Filename : /bin/grep
You may prefer the output and speed of the repoquery tool, available in the yum-utils package.
sudo yum install yum-utils
repoquery --whatprovides '*bin/grep'
grep-0:2.5.1-55.el5....
Grid of responsive squares
...ith CSS. I will explain how in a step by step process but first here are 2 demos of what you can achieve :
Grid of square images
Grid of squares with content
Now let's see how to make these fancy responsive squares!
1. Making the responsive squares :
The trick for keeping elements squar...
How to sign an android apk file
...echnology
What is the name of your organization?
[Unknown]: MySignedApp Demo
What is the name of your City or Locality?
[Unknown]: Mumbai
What is the name of your State or Province?
[Unknown]: Maharashtra
What is the two-letter country code for this unit?
[Unknown]: IN
Is CN=MySignedApp ...
How do you determine the size of a file in C?
...
Based on NilObject's code:
#include <sys/stat.h>
#include <sys/types.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
return -1; ...
Java associative-array
...ped, however has less elegant syntax/API.
This is the closest you can get based on your example:
Map<Integer, Map<String, String>> arr =
org.apache.commons.collections.map.LazyMap.decorate(
new HashMap(), new InstantiateFactory(HashMap.class));
//$arr[0]['name'] = 'demo'...