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How many files can I put in a directory?
...
I have had over 8 million files in a single ext3 directory. libc readdir() which is used by find, ls and most of the other methods discussed in this thread to list large directories.
The reason ls and find are slow in this case is that readdir() only reads 32K of directory entries at a t...
How do I use the conditional operator (? :) in Ruby?
...ast case as said issue does not arise.
You can use the "long-if" form for readability on multiple lines:
question = if question.size > 20 then
question.slice(0, 20) + "..."
else
question
end
share
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What does the “yield” keyword do?
...you must understand iterables.
Iterables
When you create a list, you can read its items one by one. Reading its items one by one is called iteration:
>>> mylist = [1, 2, 3]
>>> for i in mylist:
... print(i)
1
2
3
mylist is an iterable. When you use a list comprehension, you...
How to get an object's property's value by property name?
...your question and explain why he should try this and why it improves the already existing answers.
– T3 H40
Jan 15 '16 at 14:41
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List directory in Go
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You can try using the ReadDir function in the io/ioutil package. Per the docs:
ReadDir reads the directory named by dirname and returns a list of sorted directory entries.
The resulting slice contains os.FileInfo types, which provide the met...
Multithreading: What is the point of more threads than cores?
...thought the point of a multi-core computer is that it could run multiple threads simultaneously. In that case, if you have a quad-core machine, what's the point of having more than 4 threads running at a time? Wouldn't they just be stealing time (CPU Resources) from each other?
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Django REST Framework: adding additional field to ModelSerializer
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Note that SerializerMethodField is read-only, so this won't work for incoming POST/PUT/PATCH.
– Scott A
Aug 4 '15 at 19:12
25
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How to make grep only match if the entire line matches?
...at case:
grep '^[[:blank:]]*ABB\.log[[:blank:]]*$' a.tmp
A simple while-read loop in shell would do this implicitly:
while read file
do
case $file in
(ABB.log) printf "%s\n" "$file"
esac
done < a.tmp
share
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Simple insecure two-way data “obfuscation”?
...We will have to write the unencrypted bytes to the stream,
* then read the encrypted result back from the stream.
*/
#region Write the decrypted value to the encryption stream
CryptoStream cs = new CryptoStream(memoryStream, EncryptorTransform, CryptoStreamMode.Writ...
Initializing C# auto-properties [duplicate]
... Foo
{
public string Bar { get; set; } = "bar";
}
You can also write read-only automatically-implemented properties, which are only writable in the constructor (but can also be given a default initial value:
public class Foo
{
public string Bar { get; }
public Foo(string bar)
{
...