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scp or sftp copy multiple files with single command
... answered Feb 11 '14 at 1:56
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Apache Kafka vs Apache Storm
...al time processing abilities, meaning you can execute all kind of manipulations on real time data in parallel.
The common flow of these tools (as I know it) goes as follows:
real-time-system --> Kafka --> Storm --> NoSql --> BI(optional)
So you have your real time app handling high vo...
Get the current first responder without using a private API
I submitted my app a little over a week ago and got the dreaded rejection email today. It tells me that my app cannot be accepted because I'm using a non-public API; specifically, it says,
...
What is the difference between max-device-width and max-width for mobile web?
...dth for development, although max-device-width is more accurate for production.
– John Magnolia
Mar 24 '13 at 20:15
31
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Multiple Indexes vs Multi-Column Indexes
... helps your data insert at the end of the index and not cause lots of disk IO and Page splits.
Secondly, if you are creating other indexes on your data and they are constructed cleverly they will be reused.
e.g. imagine you search a table on three columns
state, county, zip.
you sometimes sea...
Center Oversized Image in Div
...h respect to its parent no matter both of their sizes.
.parent {
position: relative;
overflow: hidden;
//optionally set height and width, it will depend on the rest of the styling used
}
.child {
position: absolute;
top: -9999px;
bottom: -9999px;
left: -9999px;
righ...
How to load images dynamically (or lazily) when users scrolls them into view
... scrolls down the page enough to bring them inside the visible viewport region ( upon view source, the page shows X number of <img> tags but they are not fetched from the server straight away ). What is this technique called, how does it work and in how many browsers does it work. And is there...
Read/write to Windows registry using Java
...
I know this question is old, but it is the first search result on google to "java read/write to registry". Recently I found this amazing piece of code which:
Can read/write to ANY part of the registry.
DOES NOT USE JNI.
DOES NOT USE ANY 3...
How to have Android Service communicate with Activity
I'm writing my first Android application and trying to get my head around communication between services and activities. I have a Service that will run in the background and do some gps and time based logging. I will have an Activity that will be used to start and stop the Service.
...
Concurrent vs serial queues in GCD
...that queue (I could have added another block using async a few seconds previously)
sync - serial: the code runs on a background thread but the main thread waits for it to finish, blocking any updates to the UI. The block can assume that it's the only block running on that queue
Obviously you would...