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What is a Manifest in Scala and when do you need it?
...how to tune into their signal, you can benefit in ways you cannot imagine, from deciding what to eat for lunch or which lotto number to play.
It isn't clear if a Manifest would benefit the errors you are seeing without knowing more detail.
One common use of Manifests is to have your code behave di...
Android adb not found
When I run my android app from eclipse, I get this error.
20 Answers
20
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iOS app, programmatically get build version
..."Contact Us" button, I use this code to get a formatted HTML on the e-mail from the user. It gives me all the info that I need to start helping solving any issue:
struct utsname systemInfo;
uname(&systemInfo);
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
NSDate *date = [NSDat...
Why do we need extern “C”{ #include } in C++?
...thing like this: #ifdef __cplusplus extern "C" { #endif So when included from a C++ file they are still treated as a C header.
– Calmarius
Mar 13 '17 at 12:58
add a comment
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How to get everything after a certain character?
... strpos() finds the offset of the underscore, then substr grabs everything from that index plus 1, onwards.
$data = "123_String";
$whatIWant = substr($data, strpos($data, "_") + 1);
echo $whatIWant;
If you also want to check if the underscore character (_) exists in your string before t...
How is CountDownLatch used in Java Multithreading?
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do we use the new CountDownLatch(3) as we have 3 threads from the newFixedThreadPool defined?
– Chaklader Asfak Arefe
Jan 30 '18 at 6:52
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Split string every nth character?
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There is already an inbuilt function in python for this.
>>> from textwrap import wrap
>>> s = '1234567890'
>>> wrap(s, 2)
['12', '34', '56', '78', '90']
This is what the docstring for wrap says:
>>> help(wrap)
'''
Help on function wrap in module textwrap:...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
... canonical path.
A canonical path is always an absolute path.
Converting from a path to a canonical path makes it absolute (usually tack on the current working directory so e.g. ./file.txt becomes c:/temp/file.txt). The canonical path of a file just "purifies" the path, removing and resolving stu...
Change one value based on another value in pandas
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You can use map, it can map vales from a dictonairy or even a custom function.
Suppose this is your df:
ID First_Name Last_Name
0 103 a b
1 104 c d
Create the dicts:
fnames = {103: "Matt", 104: "Mr"}
lnames = {103:...
Find a class somewhere inside dozens of JAR files?
...and's invocation.
find "ClassName" > NUL - search standard input, piped from the output of the jar command, for the given class name; this will set ERRORLEVEL to 1 iff there's a match (otherwise 0).
&& echo %G - iff ERRORLEVEL is non-zero, write the Java archive file name to standard outp...