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Determine the number of lines within a text file
Is there an easy way to programmatically determine the number of lines within a text file?
11 Answers
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Functions that return a function
...e to the function. Putting the parenthesis at the end of a function name, calls the function, returning the functions return value.
Demo
function a() {
alert('A');
}
//alerts 'A', returns undefined
function b() {
alert('B');
return a;
}
//alerts 'B', returns function a
function c() {...
How to force GitHub Pages build?
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From GitHub support, 2014-06-07:
It's not currently possible to manually trigger a rebuild, without pushing a commit to the appropriate branch.
Edit:
As Andy pointed out in the comments, you can push an empty commit with the command:
git commit -m 'rebuild pages' --allow-empty
git push ...
Defining Z order of views of RelativeLayout in Android
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the solution to this bug for me was to call setElevation(1000) on the view which I want to be rendered over the button.
– fire in the hole
May 22 '17 at 16:23
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Are there benefits of passing by pointer over passing by reference in C++?
...ect", then use a pointer instead of a reference.
Also, passing by pointer allows you to explicitly see at the call site whether the object is passed by value or by reference:
// Is mySprite passed by value or by reference? You can't tell
// without looking at the definition of func()
func(mySpri...
Find size of object instance in bytes in c#
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First of all, a warning: what follows is strictly in the realm of ugly, undocumented hacks. Do not rely on this working - even if it works for you now, it may stop working tomorrow, with any minor or major .NET update.
You can use th...
Extracting specific columns from a data frame
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Using the dplyr package, if your data.frame is called df1:
library(dplyr)
df1 %>%
select(A, B, E)
This can also be written without the %>% pipe as:
select(df1, A, B, E)
share
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When should you branch?
... Jan 20 '10 at 11:09
Daniel VassalloDaniel Vassallo
301k6666 gold badges475475 silver badges424424 bronze badges
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How do I catch a PHP fatal (`E_ERROR`) error?
...ost PHP errors, but it doesn't work for fatal ( E_ERROR ) errors, such as calling a function that doesn't exist. Is there another way to catch these errors?
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How do I get currency exchange rates via an API such as Google Finance? [closed]
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Thanks for all your answers.
Free currencyconverterapi:
Rates updated every 30 min
API key is now required for the free server.
A sample conversion URL is: http://free.currencyconverterapi.com/api/v5/convert?q=EUR_USD&compact=y
F...