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Convert string in base64 to image and save on filesystem in Python
...cAeHkAAeLqlDIAAAAASUVORK5CYII='
Decoded the data using the base64 codec, and then write it to the filesystem.
# In Python 2.7
fh = open("imageToSave.png", "wb")
fh.write(img_data.decode('base64'))
fh.close()
# or, more concisely using with statement
with open("imageToSave.png", "wb") as fh:
...
Ruby: extend self
In Ruby, I understand the basic idea of extend . However, what's happening in this segment of code? Specifically, what does extend do? Is it just a convenient way of making the instance methods into class methods? Why would you do it this way rather than specifying class methods from the beginnin...
Retrieve only static fields declared in Java class
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I stumbled across this question by accident and felt it needed a Java 8 update using streams:
public static List<Field> getStatics(Class<?> clazz) {
List<Field> result;
result = Arrays.stream(clazz.getDeclaredFields())
// filter ...
UIScrollView scroll to bottom programmatically
...height - self.scrollView.frame.size.height);
– Grantland Chew
Nov 2 '11 at 0:22
71
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Is a url query parameter valid if it has no value?
...ikely acceptable to your server-side framework/code
The URI RFC doesn't mandate a format for the query string. Although it is recognized that the query string will often carry name-value pairs, it is not required to (e.g. it will often contain another URI).
3.4. Query
The query componen...
What's the reason for “Error:Cannot determine Java VM executable in selected JDK”?
I am using IntelliJ IDEA 13.1.4 and also tried the latest release 14.
11 Answers
11
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Why is my Spring @Autowired field null?
...sn't know about the copy of MileageFeeCalculator that you created with new and didn't know to autowire it.
The Spring Inversion of Control (IoC) container has three main logical components: a registry (called the ApplicationContext) of components (beans) that are available to be used by the applica...
Url decode UTF-8 in Python
...th URL quoting, so you want to decode, with urllib.parse.unquote(), which handles decoding from percent-encoded data to UTF-8 bytes and then to text, transparently:
from urllib.parse import unquote
url = unquote(url)
Demo:
>>> from urllib.parse import unquote
>>> url = 'exampl...
C# naming convention for constants?
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The recommended naming and capitalization convention is to use PascalCasing for constants (Microsoft has a tool named StyleCop that documents all the preferred conventions and can check your source for compliance - though it is a little bit too ana...
Convert JSON String To C# Object
..."{\"test\":\"some data\"}"); instead. Also, you don't need get/setTest( ), and String test, should be public. This looks more like java than C#.
– dvallejo
Oct 8 '13 at 16:47
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