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how to create a Java Date object of midnight today and midnight tomorrow?
... If you did something like System.out.print(date), the system converted the date instance into the system time zone (CDT). 7pm in CDT is midnight in GMT. If you need a midnight in a selected time zone, you have to add this time zone's offset, taking DST into account.
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What permission do I need to access Internet from an Android application?
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Add the INTERNET permission to your manifest file.
You have to add this line:
<uses-permission android:name="android.permission.INTERNET" />
outside the application tag in your AndroidManifest.xml
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How to use wait and notify in Java without IllegalMonitorStateException?
I have 2 matrices and I need to multiply them and then print the results of each cell. As soon as one cell is ready I need to print it, but for example I need to print the [0][0] cell before cell [2][0] even if the result of [2][0] is ready first. So I need to print it by order.
So my idea is to mak...
How do I programmatically change file permissions?
... main(String[] args) {
libc.chmod("/path/to/file", 0755);
}
}
interface CLibrary extends Library {
public int chmod(String path, int mode);
}
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Difference between getContext() , getApplicationContext() , getBaseContext() and “this”
...xt including code to access resources (e.g. openFileInput(), getString()), interact with other components (e.g. sendBroadcast(), registerReceiver()), requests permissions (e.g. checkCallingOrSelfPermission()) and resolving file system locations (e.g. getFilesDir()). ContextWrapper is really useful t...
Generate random number between two numbers in JavaScript
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a | 0 is also the fastest and most optimized way to convert a string to an integer. It only works with strings containing integers ("444" and "-444"), i.e. no floats/fractions. It yields a 0 for everything that fails. It is one of the main optimizations behind asm.js.
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MySQL offset infinite rows
...nt to watch out because you won't be able to store this value in an 32 bit integer. You have to make sure you store this as a string to ensure compatibility.
– AlicanC
Dec 7 '11 at 22:51
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MySQL InnoDB not releasing disk space after deleting data rows from table
...on the existing table." This implies that you could turn this feature on, "convert" the existing tables to use a separate InnoDB file with the ALTER TABLE command, then OPTIMIZE the table to shrink it's size. However, once you're done you'd have to figure out how to delete the (huge) source InnoDB f...
What is the difference between class and instance attributes?
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Only the mutable types are shared. Like for int and str they still attached with each instances rather than class.
– Babu
Jul 17 '14 at 11:59
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What do I use for a max-heap implementation in Python?
...s to invert the value of the keys and use heapq. For example, turn 1000.0 into -1000.0 and 5.0 into -5.0.
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