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Editing the git commit message in GitHub
...blem that if other people on your team have pulled the previous commit you now have different histories (including different commits) on different machines. If you know no one has pulled your commit this is safe. Read source Dan posted
– TMin
Mar 15 '17 at 22:2...
Android phone orientation overview including compass
... sensors for a while.
I thought I understood it. Then I realised I didn't. Now I think (hope) I have a better feeling for it again but I am still not 100%. I will try and explain my patchy understanding of it and hopefully people will be able to correct me if I am wrong in parts or fill in any blank...
What happens if you call erase() on a map element while iterating from begin to end?
...een improved/made consistent across all container types).
The erase method now returns the next iterator.
auto pm_it = port_map.begin();
while(pm_it != port_map.end())
{
if (pm_it->second == delete_this_id)
{
pm_it = port_map.erase(pm_it);
}
else
{
++pm_it;
...
Is iterating ConcurrentHashMap values thread safe?
...if an existing iterator will reflect later changes to the map. So I don't know, and by specification no one does (without looking at the code, and that may change with every update of the runtime). So you can't rely on it.
– Waldheinz
Oct 3 '15 at 8:06
...
In a bootstrap responsive page how to center a div
...
Update for Bootstrap 4
Now that Bootstrap 4 is flexbox, vertical alignment is easier. Given a full height flexbox div, just us my-auto for even top and bottom margins...
<div class="container h-100 d-flex justify-content-center">
<div...
adding header to python requests module
Earlier I used httplib module to add a header in the request. Now I am trying the same thing with the requests module.
...
How to display nodejs raw Buffer data as Hex string
...
do u know how to do the reverse?
– bubakazouba
Dec 21 '15 at 23:17
20
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C# Error: Parent does not contain a constructor that takes 0 arguments
...
@JuanCarlosOropeza The basic reason is that, up until now, there was no need for a parameterless parent constructor, so the assumption would be that consumers of the class don't need one. Since we really only want one for the sake of any deriving classes, protected is the sensib...
View's getWidth() and getHeight() returns 0
...victim)
2. Add a runnable to the layout queue: View.post()
Not very well known and my favourite solution. Basically just use the View's post method with your own runnable. This basically queues your code after the view's measure, layout, etc. as stated by Romain Guy:
The UI event queue will proces...
How to use the toString method in Java?
...tion - Coordinates@addbf1 //concise, but not really useful to the reader
Now, overriding toString() in the Coordinates class as below,
@Override
public String toString() {
return "(" + x + ", " + y + ")";
}
results in
Bourne's current location - (1.0, 2.0) //concise and informative
The u...