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Difference between maven scope compile and provided for JAR packaging
What is the difference between the maven scope compile and provided when artifact is built as a JAR? If it was WAR, I'd understand - the artifact would be included or not in WEB-INF/lib. But in case of a JAR it doesn't matter - dependencies aren't included. They have to be on classpath when thei...
Do I need to create indexes on foreign keys on Oracle?
...rom a query performance perspective to create a separate index on A.B_ID.
If you ever delete rows in B, you definitely want A.B_ID to be indexed. Otherwise, Oracle will have to do a full table scan on A every time you delete a row from B to make sure that there are no orphaned records (depending o...
Android: How can I get the current foreground activity (from a service)?
...e activity, with a low-priority BroadcastReceiver as backup (to raise a Notification if the activity is not on-screen) -- here is a blog post with more on this pattern
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Node.js quick file server (static files over HTTP)
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This is awesome. I needed to specify an address bc for some reason the default 0.0.0.0 wasn't cooperating w my dev environment. http-server -a localhost got er dun.
– Sam Berry
May 15 '15 at 1:55
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Mod in Java produces negative numbers [duplicate]
...e by doing this:
int i = (((-1 % 2) + 2) % 2)
or this:
int i = -1 % 2;
if (i<0) i += 2;
(obviously -1 or 2 can be whatever you want the numerator or denominator to be)
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How do I convert between big-endian and little-endian values in C++?
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If you're using Visual C++ do the following: You include intrin.h and call the following functions:
For 16 bit numbers:
unsigned short _byteswap_ushort(unsigned short value);
For 32 bit numbers:
unsigned long _byteswap_u...
Retrieve column names from java.sql.ResultSet
...ame = rsmd.getColumnName(1);
and you can get the column name from there. If you do
select x as y from table
then rsmd.getColumnLabel() will get you the retrieved label name too.
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strdup() - what does it do in C?
... char *dst = malloc(strlen (src) + 1); // Space for length plus nul
if (dst == NULL) return NULL; // No memory
strcpy(dst, src); // Copy the characters
return dst; // Return the new string
}
In other words:
It tries to alloc...
Set ImageView width and height programmatically?
...ght of the ImageView:
imageView.getLayoutParams().height = 20;
Important. If you're setting the height after the layout has already been 'laid out', make sure you also call:
imageView.requestLayout();
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How to enter quotes in a Java string?
...Henry's answer, I'm not quite 100% sure I understand what you are asking.
If it is about getting double quote marks added into a string, you can concatenate the double quotes into your string, for example:
String theFirst = "Java Programming";
String ROM = "\"" + theFirst + "\"";
Or, if you want...