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Is there a performance difference between i++ and ++i in C?
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Em>x m>ecutive summary: No.
i++ could potentially be slower than ++i, since the old value of i
might need to be saved for later use, but in practice all modern
compilers will optimize this away.
We can demonstrate this by lookin...
Add Bootstrap Glyphicon to Input Bom>x m>
How can I add a glyphicon to a tem>x m>t type input bom>x m>? For em>x m>ample I want to have 'icon-user' in a username input, something like this:
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Why can't the tag contain a tag inside it?
...lace to look for allowed containment relations is the HTML spec. See, for em>x m>ample, http://www.w3.org/TR/html4/sgml/dtd.html. It specifies which elements are block elements and which are inline. For those lists, search for the section marked "HTML content models".
For the P element, it specifies the...
How to verify that a specific method was not called using Mockito?
...someMethod();
The documentation of this feature is there §4 "Verifying em>x m>act number of invocations / at least m>x m> / never", and the never javadoc is here.
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When to use valueChangeListener or f:ajam>x m> listener?
... during the HTML DOM change event, then you'd need to add another <f:ajam>x m>/> without a listener(!) to the input component. It will cause a form submit which processes only the current component (as in em>x m>ecute="@this").
<h:selectOneMenu value="#{bean.value}" valueChangeListener="#{bean.chang...
Creating temporary files in bash
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The mktemp(1) man page em>x m>plains it fairly well:
Traditionally, many shell scripts take the name of the program with
the pid as a suffim>x m> and use that as a temporary file name. This kind
of naming scheme is predictable and the race condition i...
How does BLAS get such em>x m>treme performance?
Out of curiosity I decided to benchmark my own matrim>x m> multiplication function versus the BLAS implementation... I was to say the least surprised at the result:
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Run R script from command line
...f you're relying on anything that methods provides you'll want to load it em>x m>plicitly in your script.
If you really want to use the ./a.R way of calling the script you could add an appropriate #! to the top of the script
#!/usr/bin/env Rscript
sayHello <- function(){
print('hello')
}
sayHell...
getResourceAsStream() vs FileInputStream
...was trying to load a file in a webapp, and I was getting a FileNotFound em>x m>ception when I used FileInputStream . However, using the same path, I was able to load the file when I did getResourceAsStream() .
What is the difference between the two methods, and why does one work while the other does...
Using pip behind a prom>x m>y with CNTLM
I am trying to use pip behind a prom>x m>y at work.
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