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xpath find if node exists
... is no xsl equivalent to if-then-else, so if you are looking for something more like an if-then-else, you're normally better off using xsl:choose and xsl:otherwise. So, Patrick's example syntax will work, but this is an alternative:
<xsl:choose>
<xsl:when test="/html/body">body node ex...
Approximate cost to access various caches and main memory?
... and Xeon range of processors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source...
How to append something to an array?
...ola");
console.log(arr);
You can use the push() function to append more than one value to an array in a single call:
// initialize array
var arr = ["Hi", "Hello", "Bonjour", "Hola"];
// append multiple values to the array
arr.push("Salut", "Hey");
// display all values
for (var i = 0; ...
Append text to input field
...
$('#input-field-id').val($('#input-field-id').val() + 'more text');
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input id="input-field-id" />
...
How to write to a file in Scala?
...
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Should I instantiate instance variables on declaration or in the constructor?
...s actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
a = new A();
}
Check Sun's explana...
What are the implications of using “!important” in CSS? [duplicate]
...main forces at work when the browser decides how CSS affects the page. The more specific a selector is, the more importance is added to it. This usually coincides with how often the selected element occurs. For example:
button {
color: black;
}
button.highlight {
color: blue;
font-...
Is it worth hashing passwords on the client side
... hashes him/herself to authenticate against your server.
For this matter, more secure authentication protocols usually jump through a number of hoops in order to make sure, that such a replay attack cannot work, usually, by allowing the client to select a bunch of random bits, which are hashed alon...
What and where are the stack and heap?
...mple to keep track of the stack; freeing a block from the stack is nothing more than adjusting one pointer.
The heap is memory set aside for dynamic allocation. Unlike the stack, there's no enforced pattern to the allocation and deallocation of blocks from the heap; you can allocate a block at any...
Select unique or distinct values from a list in UNIX shell script
...tly once:
class
jar
bin
java
uniq -d will output all lines that appear more than once, and it will print them once:
jar
bin
uniq -u will output all lines that appear exactly once, and it will print them once:
class
java
...