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Number of lines in a file in Java
...ly need to know the number of lines in these files, usually I open them up and read them line by line until I reach the end of the file
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Android and in TextView
...ery well. I replace all the empty spaces with this, and it will ellipsize from the last characters. str.replace(" ", "\u00A0") yields, "Hello wor..." instead of "Hello..."
– Seop Yoon
Feb 23 '18 at 2:27
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Automatically open Chrome developer tools when new tab/new window is opened
...to-open Developer Tools in Pop-ups if they were open where you opened them from. For example, if you do not have Dev Tools open and you get a popup, it won't open with Dev Tools. But if you Have Dev Tools Open and then you click something, the popup will have Dev-Tools Automatically opened.
UPDATE:...
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
...ects in Java, and
the way data is stored inside that
object could vary from one JVM
implementation to another.
For this reason, the notion of a
direct buffer was introduced. Direct
buffers are intended for interaction
with channels and native I/O routines.
They make a best effort ...
How to download and save a file from Internet using Java?
...m fos = new FileOutputStream("information.html");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
Using transferFrom() is potentially much more efficient than a simple loop that reads from the source channel and writes to this channel. Many operating systems can transfer bytes directly from...
Where'd padding go, when setting background Drawable?
...xt and Button views, where I have a nice padding for them to space away from the text, but when I change the background with setBackgroundDrawable or setBackgroundResource that padding is lost forever.
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Why are elementwise additions much faster in separate loops than in a combined loop?
...ch large allocations are requested, the allocator will request fresh pages from the OS. Therefore, there is a high chance that large allocations will appear at the same offset from a page-boundary.
Here's the test code:
int main(){
const int n = 100000;
#ifdef ALLOCATE_SEPERATE
double *a1 =...
How can I get the console logs from the iOS Simulator?
...
Is this still accurate? I'm not seeing anything from console.log in these log using tail or Console.app
– Jeff
Mar 11 '14 at 20:07
3
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Copying files from host to Docker container
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docker cp foo.txt mycontainer:/foo.txt
One specific file can be copied FROM the container like:
docker cp mycontainer:/foo.txt foo.txt
For emphasis, mycontainer is a container ID, not an image ID.
Multiple files contained by the folder src can be copied into the target folder using:
docker ...
rsync error: failed to set times on “/foo/bar”: Operation not permitted
I'm getting a confusing error from rsync and the initial things I'm finding from web searches (as well as all the usual chmod'ing) are not solving it:
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