大约有 45,000 项符合查询结果（耗时：0.0554秒） [XML]
Iterate over a list of files with spaces
... This is extremely clean. And makes me feel nicer than changing IFS in conjunction with a for loop
– Derrick
Aug 18 '11 at 4:13
15
...
cartesian product in pandas
...
If you have a key that is repeated for each row, then you can produce a cartesian product using merge (like you would in SQL).
from pandas import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2...
Run javascript function when user finishes typing instead of on key up?
......
//setup before functions
var typingTimer; //timer identifier
var doneTypingInterval = 5000; //time in ms, 5 second for example
var $input = $('#myInput');
//on keyup, start the countdown
$input.on('keyup', function () {
clearTimeout(typingTimer);
typingTimer = setTimeout(do...
How to check the version before installing a package using apt-get?
...
If we use apt install some packages (may not installed) get install straightaway. So I think for new Linux user its better to use apt policy.
– Yasiru G
Oct 25 '19 at 8:18
...
How to handle configuration in Go [closed]
...configuration := Configuration{}
err := decoder.Decode(&configuration)
if err != nil {
fmt.Println("error:", err)
}
fmt.Println(configuration.Users) // output: [UserA, UserB]
share
|
improve ...
Differences between std::make_unique and std::unique_ptr with new
...t here is that std::make_unique<A> and std::make_unique<B> are now temporary objects, and cleanup of temporary objects is correctly specified in the C++ standard: their destructors will be triggered and the memory freed. So if you can, always prefer to allocate objects using std::make_un...
Capture HTML Canvas as gif/jpg/png/pdf?
...
Oops. Original answer was specific to a similar question. This has been revised:
var canvas = document.getElementById("mycanvas");
var img = canvas.toDataURL("image/png");
with the value in IMG you can write it out as a new Image like so:
document...
Most popular screen sizes/resolutions on Android phones [closed]
...tioned various resolution sizes in mdpi, hdpi, xhdpi and xxhdpi like that. Now i going to develop fully images app. I get image from designer, I need to asking him for which resolution size of images in mdpi, hdpi, xhdpi and xxhdpi. Please help me. Thanks in advance.
– Sakthi
...
How can I give eclipse more memory than 512M?
...-Xms256m
-Xmx1024m
But, I've failed at setting it higher than 1024 megs. If anybody knows how to make that work, I'd love to know.
EDIT: 32bit version of juno seems to not accept more than Xmx1024m where the 64 bit version accept 2048.
EDIT: Nick's post contains some great links that explain two...
Entity Framework Code First - two Foreign Keys from same table
...
What if two teams are allowed to play only once?
– ca9163d9
Jun 8 '13 at 18:53
4
...