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What is the correct way to get a subarray in Scala?
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An example of extracting specific columns from a 2D Scala Array (original_array):
import scala.collection.mutable.ArrayBuffer
val sub_array = ArrayBuffer[Array[String]]()
val columns_subset: Seq[String] = Seq("ColumnA", "ColumnB", "ColumnC")
val columns_original = original_array(0)
for (column_...
URLWithString: returns nil
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Use This Function if you deal with file saved on file manager.
NSURL *_url = [NSURL fileURLWithPath:path];
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“#include” a text file in a C program as a char[]
...x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x0a
};
unsigned int a_len = 12;
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File Explorer in Android Studio
... files should be in:
DDMS-> File Explorer ->data -> data -> MY_PACKAGE_NAME -> shared_prefs -> YOUR_PREFERENCE_NAME.xml
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How to grep a text file which contains some binary data?
... Yes, except that this won't work on OSX unless you do the following: LC_ALL="C" grep -a
– Chris Stratton
Feb 10 '19 at 18:05
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C# if/then directives for debug vs release
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DEBUG/_DEBUG should be defined in VS already.
Remove the #define DEBUG in your code. Set preprocessors in the build configuration for that specific build.
The reason it prints "Mode=Debug" is because of your #define and then skip...
How do I merge a list of dicts into a single dict?
... this:
from functools import reduce
reduce(lambda a, b: dict(a, **b), list_of_dicts)
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How does a public key verify a signature?
...autl -encrypt -inkey public.pem -pubin -in message.txt -out message_enc_pub.ssl
openssl rsautl -decrypt -inkey private.pem -in message_enc_pub.ssl -out message_pub.txt
xxd message_enc_pub.ssl # Print the binary contents of the encrypted message
cat message_pub.txt # Print the decrypted...
Difference between object and class in Scala
...// Prefix to call
def m(x: Int) = X.f(x)
// Import and use
import X._
def n(x: Int) = f(x)
private def o = 2
}
object X {
private def f(x: Int) = x * x
// object X can see private members of class X
def g(x: X) = {
import x._
x.o * o // fully specified and imported
}
}...
How can I check whether a radio button is selected with JavaScript?
...nd you have HTML like this
<input type="radio" name="gender" id="gender_Male" value="Male" />
<input type="radio" name="gender" id="gender_Female" value="Female" />
For client-side validation, here's some Javascript to check which one is selected:
if(document.getElementById('gender_M...