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git push says “everything up-to-date” even though I have local changes
...ke sure to use git stash first if you want to save your currently modified files.
$ git log -1
# note the SHA-1 of latest commit
$ git checkout master
# reset your branch head to your previously detached commit
$ git reset --hard <commit-id>
As mentioned in the git checkout man page (emph...
What resources are shared between threads?
...xt and data, as well as other resources. These
resource may include open files, child processes, pending alarms,
signal handlers, accounting information, and more. By putting them
together in the form of a process, they can be managed more easily.
The other concept a process has is a thread ...
SQL/mysql - Select distinct/UNIQUE but return all columns?
...an aggregate function, which ever field you GROUP BY will be your DISTINCT filed.
If you make your query:
SELECT * from table GROUP BY field1;
It will show all your results based on a single instance of field1.
For example, if you have a table with name, address and city. A single person has m...
How to escape special characters in building a JSON string?
...(though of course you will when manually editing, say, a JSON-based config file). Instead, form the data structure you want to encode using whatever native map, array, string, number, boolean, and null types your language has, and then encode it to JSON with a JSON-encoding function. Such a function...
Using the “animated circle” in an ImageView while loading stuff
...
Simply put this block of xml in your activity layout file:
<RelativeLayout
android:id="@+id/loadingPanel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center" >
<ProgressBar
android:layout_width...
Uses of content-disposition in an HTTP response header
I have found the following asp.net code to be very useful when serving files from a database:
6 Answers
...
Where does Scala look for implicits?
...ned in current scope
Explicit imports
wildcard imports
Same scope in other files
Now look at associated types in
Companion objects of a type
Implicit scope of an argument's type (2.9.1)
Implicit scope of type arguments (2.8.0)
Outer objects for nested types
Other dimensions
Let's give some exa...
How to take screenshot of a div with JavaScript?
...
This is an expansion of @Dathan's answer, using html2canvas and FileSaver.js.
$(function() {
$("#btnSave").click(function() {
html2canvas($("#widget"), {
onrendered: function(canvas) {
theCanvas = canvas;
canvas.toBlob(function(...
How to find the installed pandas version
...das as pd >>> pd.__version__ Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: module 'pandas' has no attribute '__version__'
– jangorecki
May 26 '18 at 10:38
...
Why are only final variables accessible in anonymous class?
...ls or jvms yet, but we do know, that the compiler creates a separate class file for each inner class and it has to make sure, that the methods declared on this class file (on byte code level) at least have access to the values of local variables.
(Jon has the complete answer - I keep this one undel...