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Changing names of parameterized tests
...estring is a string, which can have the following special placeholders:
{index} - the index of this set of arguments. The default namestring is {index}.
{0} - the first parameter value from this invocation of the test.
{1} - the second parameter value
and so on
The final name of the test will b...
split string only on first instance - java
...swers suggest the limit approach, This can be another way
You can use the indexOf method on String which will returns the first Occurance of the given character, Using that index you can get the desired output
String target = "apple=fruit table price=5" ;
int x= target.indexOf("=");
System.out.pri...
Git - Undo pushed commits
...EHIND from the remote branch as shown below
Run following to update your indexes (if there are any updates). It is recommended that you ask all developers not to accept any pull requests on main remote branch.
git fetch --all
Once you are done with it then you are required to Push this commit ...
Advantages and disadvantages of GUID / UUID database keys
...t, and I thought I should point out a big downside of GUID PK's: Clustered Indexes.
If you have a lot of records, and a clustered index on a GUID, your insert performance will SUCK, as you get inserts in random places in the list of items (thats the point), not at the end (which is quick)
So if yo...
Rails migration for has_and_belongs_to_many join table
...ll => false
t.references :orange, :null => false
end
# Adding the index can massively speed up join tables. Don't use the
# unique if you allow duplicates.
add_index(:apples_oranges, [:apple_id, :orange_id], :unique => true)
If you use the :unique => true on the index, then you shou...
In git, is there a simple way of introducing an unrelated branch to a repository?
...
This doesn't do exactly what the asker wanted, because it populates the index and the working tree from <start_point> (since this is, after all, a checkout command). The only other action necessary is to remove any unwanted items from the working tree and index. Unfortunately, git reset --h...
Why does typeof array with objects return “object” and not “array”? [duplicate]
...perty names. A property name P (in the form of a String value) is an array index if and only if ToString(ToUint32(P)) is equal to P and ToUint32(P) is not equal to 2^32-1. A property whose property name is an array index is also called an element. Every Array object has a length property whose value...
Maintain/Save/Restore scroll position when returning to a ListView
...
Try this:
// save index and top position
int index = mList.getFirstVisiblePosition();
View v = mList.getChildAt(0);
int top = (v == null) ? 0 : (v.getTop() - mList.getPaddingTop());
// ...
// restore index and position
mList.setSelectionFrom...
Modifying a subset of rows in a pandas dataframe
...
Use .loc for label based indexing:
df.loc[df.A==0, 'B'] = np.nan
The df.A==0 expression creates a boolean series that indexes the rows, 'B' selects the column. You can also use this to transform a subset of a column, e.g.:
df.loc[df.A==0, 'B'] = ...
How to get arguments with flags in Bash
...arrays
declare -A arguments=();
declare -A variables=();
# declaring an index integer
declare -i index=1;
# any variables you want to use here
# on the left left side is argument label or key (entered at the command line along with it's value)
# on the right side is the variable name the value ...