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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
... a null reference, one that does not refer to any object. null is the default value of reference-type variables.
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How to write to file in Ruby?
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Alternatively: f = File.open('name','w'); f.write('text'); f.close
– vish
Nov 21 '12 at 22:32
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How do I pass the value (not the reference) of a JS variable to a function? [duplicate]
...t or const keywords to create a block-scoped variable:
for (let i = 0; i < results.length; i++) {
let marker = results[i];
google.maps.event.addListener(marker, 'click', () => change_selection(i));
}
In older browsers, you need to create a separate scope that saves the variable in its...
Setting an image for a UIButton in code
...ationController.parentViewController
action:@selector(revealToggle:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *jobsButton =
[[UIBarButtonItem alloc] initWithCustomView:listButton];
self.navigationItem.leftBarButtonItem = jobsButton;
...
How to disallow temporaries
...t sure I understand. Foo("hello") tries to call void Foo(float) and it results in a linker error ? But why is the float version called instead of the Foo ctor ?
– undu
Oct 31 '12 at 15:01
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How to apply a patch generated with git format-patch?
... applied patch.
This can be useful for later reference.
git am --signoff < a_file.patch
See an example in this article:
In your git log, you’ll find that the commit messages contain a “Signed-off-by” tag. This tag will be read by Github and others to provide useful info about how th...
Best way to compare dates in Android
...should work), but am using deprecated methods. Any good suggestion for an alternative? Thanks.
15 Answers
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How do I repeat an edit on multiple lines in Vim?
...then move (hjkl-wise, as normal), and if you want to insert something on multiple lines, use Shift-i.
So for the text:
abc123abc
def456def
ghi789ghi
if you hit Ctrl-v with your cursor over the 1, hit j twice to go down two columns, then Shift-i,ESC , your text would look like this:
abc,123abc
d...
What is the difference between Step Into and Step Over in the Eclipse debugger?
...tatic void f (int x) {
System.out.println ("num is " + (x+0)); // <- STEP INTO
}
static void g (int x) {
-> f(x); //
f(1); // <----------------------------------- STEP OVER
}
public static void main (String args[]) {
g(2);
g(3); // <...
Catch paste input
... one, and it fits perfectly my needs !
– Marc Brillault
Feb 3 '16 at 15:53
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