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What is the Bash equivalent of Python's pass statement
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157
You can use : for this.
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Showing data values on stacked bar chart in ggplot2
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195
From ggplot 2.2.0 labels can easily be stacked by using position = position_stack(vjust = 0.5)...
A regex to match a substring that isn't followed by a certain other substring
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162
Try:
/(?!.*bar)(?=.*foo)^(\w+)$/
Tests:
blahfooblah # pass
blahfooblahbarfail ...
How to Set Focus on Input Field using JQuery
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138
Try this, to set the focus to the first input field:
$(this).parent().siblings('div.bottom')....
How do I select child elements of any depth using XPath?
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161
You're almost there. Simply use:
//form[@id='myform']//input[@type='submit']
The // shortcu...
Is Java Regex Thread Safe?
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133
Yes, from the Java API documentation for the Pattern class
Instances of this (Pattern) class...
Why sizeof int is wrong, while sizeof(int) is right?
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101
The following could be ambiguous:
sizeof int * + 1
Is that (sizeof (int*)) + 1, or (sizeof(...
How to make execution pause, sleep, wait for X seconds in R?
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145
See help(Sys.sleep).
For example, from ?Sys.sleep
testit <- function(x)
{
p1 <- pr...
What is a “callback” in C and how are they implemented?
...RandomValue(void)
{
return rand();
}
int main(void)
{
int myarray[10];
populate_array(myarray, 10, getNextRandomValue);
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}
Here, the populate_array function takes a function pointer as its third parameter, and calls it to get the values to populate the array with. We've written...
“Width equals height” constraint in Interface Builder
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187
Update Xcode 5.1b5
Ctrl+click and drag from a view and release while the pointer is over th...