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How to split data into training/testing sets using sample function
...101) # Set Seed so that same sample can be reproduced in future also
# Now Selecting 75% of data as sample from total 'n' rows of the data
sample <- sample.int(n = nrow(data), size = floor(.75*nrow(data)), replace = F)
train <- data[sample, ]
test <- data[-sample, ]
By using caTools pa...
How to center a checkbox in a table cell?
... myTextEditBox
</td>
<td>
<select size ="1" name="myTextEditBox_compare_operator">
<option value="=">equals</option>
<option value="<>">does not equal</option>
</select>
...
Correctly determine if date string is a valid date in that format
... that this won't work with a British (d/m/Y) format as it will assume it's converting the American (m/d/Y). It will seem to work only if the day is lower than 12!
– Sylvester Saracevas
May 1 '18 at 12:58
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How to use PyCharm to debug Scrapy projects
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As of 2018.1 this became a lot easier. You can now select Module name in your project's Run/Debug Configuration. Set this to scrapy.cmdline and the Working directory to the root dir of the scrapy project (the one with settings.py in it).
Like so:
Now you can add breakpoin...
Passing a string with spaces as a function argument in bash
...-split and then individually glob-expanded, so if you have tabs they'll be converted to spaces, if you have words that can be evaluated as glob expressions they will be, etc.
– Charles Duffy
Mar 29 '18 at 20:45
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Reorder / reset auto increment primary key
...riable, this is okay: SET @a = @a + 1; For other statements, such as SELECT, you might get the results you expect, but this is not guaranteed. In the following statement, you might think that MySQL will evaluate @a first and then do an assignment second: SELECT @a, @a:=@a+1, ...; However...
Creating rounded corners using CSS [closed]
...ght to the DOM. Now that I've got mine adjusted the way I want, I plan to convert them to images.
– Ben Regenspan
Dec 4 '09 at 13:59
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How to extract the n-th elements from a list of tuples?
...: 1.32586884499
So over twice as fast if you have a 2 tuple pair to just convert to a dict and take the values.
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A non well formed numeric value encountered
... with alphanumeric data and creates a new variable with the same value but converted to an integer with the intval() function. Here is the code:
function get_config_bytes($val) {
$val = trim($val);
$last = strtolower($val[strlen($val)-1]);
$intval = intval(trim($val));
switch($last)...
Scala: write string to file in one statement
... that from a Scala Iterable, i.e. pretty much any collection type, using a converter: import java.nio.file.{Files, Paths}; import scala.collection.JavaConverters.asJavaIterableConverter; val output = List("1", "2", "3"); Files.write(Paths.get("output.txt"), output.asJava)
– Yaw...