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Git Tag list, display commit sha1 hashes
...can run:
git show-ref --tags
The output will then look something like:
0e76920bea4381cfc676825f3143fdd5fcf8c21f refs/tags/1.0.0
5ce9639ead3a54bd1cc062963804e5bcfcfe1e83 refs/tags/1.1.0
591eceaf92f99f69ea402c4ca639605e60963ee6 refs/tags/1.2.0
40414f41d0fb89f7a0d2f17736a906943c05acc9 refs/tags/1.3...
Pandas: drop a level from a multi-level column index?
...pd.DataFrame([[1,2], [3,4]], columns=cols)
>>> df
a
b c
0 1 2
1 3 4
[2 rows x 2 columns]
>>> df.columns = df.columns.droplevel()
>>> df
b c
0 1 2
1 3 4
[2 rows x 2 columns]
...
Naming returned columns in Pandas aggregate function? [duplicate]
...
107
This will drop the outermost level from the hierarchical column index:
df = data.groupby(...)....
How to drop a list of rows from Pandas dataframe?
...
401
Use DataFrame.drop and pass it a Series of index labels:
In [65]: df
Out[65]:
one two...
C++ equivalent of java's instanceof
...
202
Try using:
if(NewType* v = dynamic_cast<NewType*>(old)) {
// old was safely casted to...
Fastest way to reset every value of std::vector to 0
...at's the fastest way to reset every value of a std::vector<int> to 0 and keeping the vectors initial size ?
6 Answ...
RegEx for Javascript to allow only alphanumeric
...
/^[a-z0-9]+$/i
^ Start of string
[a-z0-9] a or b or c or ... z or 0 or 1 or ... 9
+ one or more times (change to * to allow empty string)
$ end of string
/i case-insensitive
Update (supporting ...
Suppress warning CS1998: This async method lacks 'await'
...
107
I've got an interface with some async functions.
Methods returning Task, I believe. async ...
how to ignore namespaces with XPath
...
answered Dec 14 '10 at 15:05
Dirk VollmarDirk Vollmar
157k5151 gold badges240240 silver badges300300 bronze badges
...
Java String - See if a string contains only numbers and not letters
...Z]+") == false && text.length() > 2){
to:
if (text.matches("[0-9]+") && text.length() > 2) {
Instead of checking that the string doesn't contain alphabetic characters, check to be sure it contains only numerics.
If you actually want to use the numeric value, use Integer.p...