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Remove Fragment Page from ViewPager in Android
I'm trying to dynamically add and remove Fragments from a ViewPager, adding works without any problems, but removing doesn't work as expected.
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How to limit the maximum value of a numeric field in a Django model?
...as various numeric fields available for use in models, e.g. DecimalField and PositiveIntegerField . Although the former can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a certain ...
Iterate over each line in a string in PHP
...ts of the file into a textarea. I can easily differentiate between the two and put whichever one they entered into a string variable, but where do I go from there?
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How to remove only underline from a:before?
... to an inline element, it affects all the boxes generated by that element, and is further propagated to any in-flow block-level boxes that split the inline (see section 9.2.1.1). […] For all other elements it is propagated to any in-flow children. Note that text decorations are not propagated to f...
git stash -> merge stashed change with current changes
I made some changes to my branch and realized I forgot I had stashed some other necessary changes to said branch. What I want is a way to merge my stashed changes with the current changes.
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How does Git handle symbolic links?
If I have a file or directory that is a symbolic link and I commit it to a Git repository, what happens to it?
4 Answers
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In mongoDb, how do you remove an array element by its index?
.../browse/SERVER-1014 , you may vote for it.
The workaround is using $unset and then $pull:
db.lists.update({}, {$unset : {"interests.3" : 1 }})
db.lists.update({}, {$pull : {"interests" : null}})
Update: as mentioned in some of the comments this approach is not atomic and can cause some race con...
How do you create a remote Git branch?
...branch locally:
git checkout -b <branch-name> # Create a new branch and check it out
The remote branch is automatically created when you push it to the remote server. So when you feel ready for it, you can just do:
git push <remote-name> <branch-name>
Where <remote-name&g...
Passing parameters to JavaScript files
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I'd recommend not using global variables if possible. Use a namespace and OOP to pass your arguments through to an object.
This code belongs in file.js:
var MYLIBRARY = MYLIBRARY || (function(){
var _args = {}; // private
return {
init : function(Args) {
_args = A...
What is “assert” in JavaScript?
...ssertions (as they're called) are used only in "testing" or "debug" builds and stripped out of production code.
Suppose you had a function that was supposed to always accept a string. You'd want to know if someone called that function with something that wasn't a string. So you might do:
assert(ty...