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How to read a large file line by line?
...ion to read the file line by line:
$handle = fopen("inputfile.txt", "r");
if ($handle) {
while (($line = fgets($handle)) !== false) {
// process the line read.
}
fclose($handle);
} else {
// error opening the file.
}
...
What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
...
How to handle anchor hash linking in AngularJS
... $rootScope.$on('$routeChangeSuccess', function(newRoute, oldRoute) {
if($location.hash()) $anchorScroll();
});
});
and your link would look like this:
<a href="#/test#foo">Test/Foo</a>
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...
sbt-assembly: deduplication found error
...ependencies += "org.apache.spark" %% "spark-core" % "1.1.0" % "provided"
If needed, read more at
https://github.com/sbt/sbt-assembly#excluding-jars-and-files
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...
Get selected subcommand with argparse
...k a', alpha)
def task_b(beta, gamma):
print('task b', beta, gamma)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers(dest='subparser')
parser_a = subparsers.add_parser('task_a')
parser_a.add_argument(
'-a', '--alpha', de...
Cannot install packages using node package manager in Ubuntu
... can copy that info into the comments in my environment setup script so I know what's going on a year from now when it doesn't work.
– Mnebuerquo
Oct 8 '14 at 18:28
29
...
How can you use optional parameters in C#?
...s:
public void SomeMethod(int a, int b = 0)
{
//some code
}
Edit: I know that at the time the question was asked, C# 4.0 didn't exist. But this question still ranks #1 in Google for "C# optional arguments" so I thought - this answer worth being here. Sorry.
...
How to get the build/version number of your Android application?
...SION_NAME from BuildConfig
BuildConfig.VERSION_NAME
Yep, it's that easy now.
Is It Returning an Empty String for VERSION_NAME?
If you're getting a empty string for BuildConfig.VERSION_NAME then read on.
I kept getting an empty string for BuildConfig.VERSION_NAME because I wasn't setting the ve...
Quickly find whether a value is present in a C array?
...h an array of size 256 (preferably 1024, but 256 is the minimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case.
...
Logical operators (“and”, “or”) in DOS batch
...
You can do and with nested conditions:
if %age% geq 2 (
if %age% leq 12 (
set class=child
)
)
or:
if %age% geq 2 if %age% leq 12 set class=child
You can do or with a separate variable:
set res=F
if %hour% leq 6 set res=T
if %hour% geq 22 set ...