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What's the correct way to convert bytes to a hex string in Python 3?
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Python has bytes-to-bytes standard codecs that perform convenient transformations like quoted-printable (fits into 7bits ascii), base64 (fits into alphanumerics), hex escaping, gzip and bz2 compression. In Python 2, you could do:
b'foo'.encode('hex')
In Python 3, str.encode / bytes.deco...
How do I delete rows in a data frame?
...= myData[!myData$A > 4,] # equal to myData[myData$A <= 4,]
You can transform a boolean vector to a vector of indices:
row_to_keep = which(myData$A > 4)
Finally, a very neat trick is that you can use this kind of subsetting not only for extraction, but also for assignment:
myData$A[myD...
If my interface must return Task what is the best way to have a no-operation implementation?
... would be more efficient". Making a method async instructs the compiler to transform it into a state-machine. It will also create a new task each time you call it. Returning an already completed task would be clearer and more performant.
– i3arnon
Aug 3 '15 at ...
Convert string to binary in python
...a byte array because it makes low level function calls instead of manually transforming every character to an integer, and then converting that integer into its binary value.
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What does character set and collation mean exactly?
...in MySQL. When it comes to the correct operation of sorting, comparing and transforming text for specific characters in MySQL, it is difficult to find the perfect solution, but *_unicode_ci is certainly better than *_general, but it also has its drawbacks. Please read: dev.mysql.com/doc/refman/8.0/e...
How do I parse a string to a float or int?
... I posted this answer in 2014. That UTF-8 glyph for a Chinese 4 has been transforming over the years depending on how stackoverflow developers change up their character encoding scheme upon their microsoft toolstack. It's a curiosity to see it flip flop over the years as new conversion schemes a...
Animated loading image in picasso
... Picasso.with(context)
.load(image_url)
.transform(new RoundedTransformation(15, 0))
.fit()
.into(holder.imageView, new Callback() {
@Override
public void onSuccess() {
progressView.setVisib...
Javascript : natural sort of alphanumerical strings
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Imagine an 8 digit padding function that transforms:
'123asd' -> '00000123asd'
'19asd' -> '00000019asd'
We can used the padded strings to help us sort '19asd' to appear before '123asd'.
Use the regular expression /\d+/g to help find all the numbers that ...
How to extract custom header value in Web API message handler?
...HttpRequestMessage, string> defaultValue,
Func<string,T> valueTransform)
{
IEnumerable<string> headerValues;
HttpRequestMessage message = Request ?? new HttpRequestMessage();
if (!message.Headers.TryGetValues(headerKey, out headerValues))
re...
Custom exception type
...t practice
If you are using Babel transpiler:
Option 1: use babel-plugin-transform-builtin-extend
Option 2: do it yourself (inspired from that same library)
function CustomError(...args) {
const instance = Reflect.construct(Error, args);
Reflect.setPrototypeOf(instance, Reflect.g...