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What is Ad Hoc Query?
...ot be determined prior to the moment the query is issued. It is created in order to get information when need arises and it consists of dynamically constructed SQL which is usually constructed by desktop-resident query tools.
Check: http://www.learn.geekinterview.com/data-warehouse/dw-basics/what-i...
Valid to use (anchor tag) without href attribute?
...f this is that an <a> element without [href] won't be in the tabbing order by default.
The real question is whether the <a> element alone is an appropriate representation of a <button>. On a semantic level, there is a distinct difference between a link and a button.
A button is s...
When to use static vs instantiated classes
... Framework. There are classes which use static method calls (factories) in order to build objects. It was impossible for me to supply another factory to that instance in order to get a customized object returned. The solution to this problem is to only use instances and instace methods and enforce s...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...instructions that are more RISC in behavior. Additionally there are out-of-order execution analyzers, branch predictors, Intel's "micro-ops fusion" that try to group instructions into larger batches of simultaneous work (kind of like the VLIW/Itanium titanic). There are even cache boundaries that co...
How to start an Intent by passing some parameters to it?
...
In order to pass the parameters you create new intent and put a parameter map:
Intent myIntent = new Intent(this, NewActivityClassName.class);
myIntent.putExtra("firstKeyName","FirstKeyValue");
myIntent.putExtra("secondKeyName"...
Run a PostgreSQL .sql file using command line arguments
...tements in them and need to run these inserts on my PostgreSQL database in order to add them to a table. The files are that large that it is impossible to open them and copy the INSERT statements into an editor window and run them there. I found on the Internet that you can use the following by navi...
Undefined reference to `pow' and `floor'
...u can now see, functions pow, floor are linked to GLIBC_2.2.5.
Parameters order is important too, unless your system is configured to use shared librares by default, my system is not, so when I issue:
$ gcc -lm fib.o
fib.o: In function `fibo':
fib.c:(.text+0x57): undefined reference to `pow'
fib.c...
“Remote System Explorer Operation” causing freeze for couple of seconds
...ct General > Workspace > Build in the tree
Uncheck Use default build order
Select RemoteSystemsTempFiles
Click Remove Project
Click Apply and Close
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Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?
... by the rest of the selector.
This also implies that there is no notion of order among simple selectors within each individual compound selector1, which means for example the following two selectors are equivalent:
table.myClass tr.row:nth-child(odd)
table.myClass tr:nth-child(odd).row
Translated t...
Skip List vs. Binary Search Tree
...th comparable performance to a balanced tree). I find that implementing in-order traversal (forwards and backwards) is far simpler because a skip-list effectively has a linked list inside its implementation.
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