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How do you clear a slice in Go?
...
It all depends on what is your definition of 'clear'. One of the valid ones certainly is:
slice = slice[:0]
But there's a catch. If slice elements are of type T:
var slice []T
then enforcing len(slice) to be zero, by the a...
In git how is fetch different than pull and how is merge different than rebase?
...aving your local* branch unchanged.
pull will perform a fetch and additionally merge the changes into your local branch.
What's the difference? pull updates you local branch with changes from the pulled branch. A fetch does not advance your local branch.
merge vs rebase
Given the following histo...
UIButton: set image for selected-highlighted state
....highlighted])
To set the background image we can use setBackgroundImage(_:for:)
Swift 2.x
// Normal
button.setImage(UIImage(named: "image1"), forState: .Normal)
// Highlighted
button.setImage(UIImage(named: "image2"), forState: .Highlighted)
// Selected
button.setImage(UIImage(named: "image3"...
Java `final` method: what does it promise?
...method can't be overridden (for object scope) or hidden (for static). This allows the original developer to create functionality that cannot be changed by subclasses, and that is all the guarantee it provides.
This means that if the method relies on other customizable components like non-public fie...
What is the intent of the methods getItem and getItemId in the Android class BaseAdapter?
...y adapter object via something like myListData.get(position) i can simply call the adapter like adapter.get(position).
The same goes for getItemId. Usually I would use this method when I want to execute some task based on the unique ID of an object in the list. This is especially useful when workin...
How to convert an IPv4 address into a integer in C#?
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This doesn't actually seem to make a difference on Windows using .NET - unsure about Mono. See dotnetfiddle.net/cBIOj2
– Jesse
Mar 7 '18 at 12:42
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Getting image dimensions without reading the entire file
...ative (drop the sign then). As for JPEG - 0xC0 isn't the only header. Basically all of 0xC0 to 0xCF except 0xC4 and 0xCC are valid headers (you can easily get them in interlaced JPGs). And, to make things more fun, height can be 0 and specified later in a 0xDC block. See w3.org/Graphics/JPEG/itu-t81...
Show a Form without stealing focus?
... code. Someone with edit rights can copy it over there and delete this for all I care ;) )
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How to swap keys and values in a hash
...;:b, 3=>:c}
BUT...
If you have duplicate values, invert will discard all but the last occurrence of your values (because it will keep replacing new value for that key during iteration). Likewise, key will only return the first match:
{a: 1, b: 2, c: 2}.key(2)
=> :b
{a: 1, b: 2, c: 2}.inv...
Edit a commit message in SourceTree Windows (already pushed to remote)
...d. However, the current 1.5.2.0 version of
SourceTree for Windows does not allow you to force-push through the GUI, so
you'll need to use Git from the command line anyways in order to do that.
Click Terminal from the GUI to open up a terminal.
Step 7
From the terminal force-push with the follow...