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Explaining Apache ZooKeeper
...ersisted data is distributed between multiple nodes (this set of nodes is called an "ensemble") and one client connects to any of them (i.e., a specific "server"), migrating if one node fails; as long as a strict majority of nodes are working, the ensemble of ZooKeeper nodes is alive. In particular,...
Handle file download from ajax post
...ent). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client to download it? I've read a number of similar threads here but none of them provide the answer I'm looking for.
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How to use an existing database with an Android application [duplicate]
...th();
which will give us the full path to the database file and works on all Android versions
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How to obtain the start time and end time of a day?
...es the first moment of the day as seen on that date in that time zone. Not all days start at 00:00!
ZoneId.of( "Asia/Tokyo" )
) // Returns a `ZonedDateTime` object.
Start of day
Get the full length of the today as seen in a time zone.
Using Half-Open approach, whe...
SQL Server dynamic PIVOT query?
...edure is going to take in the key variables of a pivot statement to dynamically create pivot statements for varying tables, column names and aggregates. The Static column is used as the group by / identity column for the pivot(this can be stripped out of the code if not necessary but is pretty commo...
What framework for MVVM should I use? [closed]
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It really depends on what you are trying to achieve, and how much infrastructure you want in place already, plus the ease with which you can find samples that help you out. I'm going to declare an interest here, because I've been ...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...ping off the tz_info value (using tz_convert(tz=None)) doesn't doesn't actually change the data that represents the naive part of the timestamp.
So, the only way to do what you want is to modify the underlying data (pandas doesn't allow this... DatetimeIndex are immutable -- see the help on Datet...
How is the default submit button on an HTML form determined?
...he submit that you had a reference to is considered active; this doesn't really fall under the remit of your question since here the submit button is unambiguous but I thought I'd include it for people who read the first part and wonder how to make a submit button successful via JS form submission. ...
What are Runtime.getRuntime().totalMemory() and freeMemory()?
...Memory()
Returns the amount of free memory in the Java Virtual Machine. Calling the gc method may result in increasing the value returned by freeMemory.
In reference to your question, maxMemory() returns the -Xmx value.
You may be wondering why there is a totalMemory() AND a maxMemory(). The an...
How to turn on front flash light programmatically in Android?
I want to turn on front flash light (not with camera preview) programmatically in Android. I googled for it but the help i found referred me to this page
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