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Why is rbindlist “better” than rbind?
...t shines are
Fast vectorized merge of list of data.frames by row
Trouble converting long list of data.frames (~1 million) to single data.frame using do.call and ldply
These have benchmarks that show how fast it can be.
rbind.data.frame is slow, for a reason
rbind.data.frame does lots of check...
$.ajax - dataType
...a.
So what you get in success handler is proper javascript object(JQuery converts the json object for you)
whereas
contentType: "application/json",
dataType: "text",
Here you are sending json data, since you haven't mentioned the encoding, as per the JQuery docs,
If no charset is specified...
How can I change my Cygwin home folder after installation?
...f %USERPROFILE% or C:\Users\$USERNAME. Of course, the Windows directory is converted to POSIX-style by Cygwin.
cygwin AD only: The user's home directory is set to the POSIX path given in the cygwinHome attribute from the cygwinUser auxiliary class. See also the section called “The cygwin schema”...
SVN:externals equivalent in Git?
...e the submodule.
More details are in "git submodule tracking latest".
To convert an existing submodule into one tracking a branch:
see all the steps in "Git submodules: Specify a branch/tag".
share
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...
Detect all Firefox versions in JS
...x 33 released October 14, 2014
// numberToIntger dropped, used to convert values to integer
else if (typeof Number.toInteger === "undefined" &&
typeof createdElement.style.fontFeatureSettings === "undefined") {
firefoxVersion = "33";
}
...
How do I validate a date string format in python?
...on dateutil library is designed for this (and more). It will automatically convert this to a datetime object for you and raise a ValueError if it can't.
As an example:
>>> from dateutil.parser import parse
>>> parse("2003-09-25")
datetime.datetime(2003, 9, 25, 0, 0)
This raises...
Evenly space multiple views within a container view
... "as is" I had to reverse the multipliers (ej. the 3:1 from the first item converts to 1:3). Just throwing this out there if it helps anyone.
– Ces
May 12 '16 at 3:01
...
Difference between fold and reduce?
... will have to be a number. To implement the previous sample, you'd have to convert the numbers to string first and then accumulate:
[1 .. 10] |> List.map string
|> List.reduce (fun s1 s2 -> s1 + "," + s2)
...
Why is using a wild card with a Java import statement bad?
... imports is very rare.
Furthermore, most modern IDEs will
allow you to convert the wildcarded
imports to a list of specific imports
with a single command. So even in the
legacy case it’s better to import
wildcards.
Wildcard imports can sometimes cause
name conflicts and ambiguit...
What is the benefit of using Fragments in Android, rather than Views?
...ts come little late so you must try to think in new way.
Maybe just try to convert your activity to FragmentActivity. Later try to find reusable code and make Fragment from it.
Its usefull but i dont know how right now. But i have some ideas.
This is always problem. Android Team made somethink and...