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git-checkout older revision of a file under a new name
... > old_main.cpp
(Note that there is colon [:] character between HEAD^ and main.cpp.) The <revision>:<path> syntax is described in git rev-parse manpage, next to last point in the "Specifying revisions" section:
<rev>:<path>, e.g. HEAD:README, :README, master:./RE...
Toggle button using two image on different state
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Do this:
<ToggleButton
android:id="@+id/toggle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/check" <!--check.xml-->
android:layout_margin="10dp"
...
How to avoid reinstalling packages when building Docker image for Python projects?
...rements.txt /srv before you run pip (RUN pip install -r requirements.txt), and add all of the other files after running pip. Thus, they should be in the following order: (1) ADD requirements.txt /srv; (2) RUN pip install -r requirements.txt; (3) ADD . /srv
– engelen
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Android: How to Programmatically set the size of a Layout
As part of an Android App I am building a button set. The buttons are part of a nested set of LinearLayouts. Using weight I have the set resizing itself automatically based on the size of the containing parent LinearLayout. The idea is, based on the pixel count and density of the screen, to set the ...
How to execute an .SQL script file using c#
... Great! This solution worked for me for being able to drop and recreate a database, and add tables (via the referenced SQL script file).
– Ogre Psalm33
Dec 2 '09 at 13:31
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How can I access a JavaScript object which has spaces in the object's key?
... answered Nov 29 '11 at 21:29
jAndyjAndy
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How to write a JSON file in C#?
...that:
Json.NET has always been memory efficient, streaming the reading and writing large documents rather than loading them entirely into memory, but I was able to find a couple of key places where object allocations could be reduced...... (now) Json.Net (6.0) allocates 8 times less memory than ...
How to git clone a specific tag
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Note if the ref is ambiguous and you have a branch and a tag named the same thing, this will prefer the branch.
– Keith Smiley
Feb 21 '18 at 22:18
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How to get the start time of a long-running Linux process?
... that ps will report the date (not the time) if it wasn't started today, and only the year if it wasn't started this year. Is the precision lost forever for old processes?
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How to split a sequence into two pieces by predicate?
... span.
The first one, partition will put all "true" elements in one list, and the others in the second list.
span will put all elements in one list until an element is "false" (in terms of the predicate). From that point forward, it will put the elements in the second list.
scala> Seq(1,2,3,4)...