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Add one row to pandas DataFrame
...
You can use df.loc[i], where the row with index i will be what you specify it to be in the dataframe.
>>> import pandas as pd
>>> from numpy.random import randint
>>> df = pd.DataFrame(columns=['lib', 'qty1', 'qty2'])
>>> for i i...
Set transparent background using ImageMagick and commandline prompt
...owing:
convert test.png -transparent white transparent.png
That changed all the white in the test.png to transparent.
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How to debug a Flask app
...evelopment key'
toolbar = DebugToolbarExtension(app)
@app.route('/')
def index():
logging.warning("See this message in Flask Debug Toolbar!")
return "<html><body></body></html>"
Start the application as follows:
FLASK_APP=main.py FLASK_DEBUG=1 flask run
...
How to insert an item into an array at a specific index (JavaScript)?
...at you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert).
In this example we will create an array and add an element to it into index 2:
var arr = [];
arr...
Is there a splice method for strings?
...is faster to slice the string twice, like this:
function spliceSlice(str, index, count, add) {
// We cannot pass negative indexes directly to the 2nd slicing operation.
if (index < 0) {
index = str.length + index;
if (index < 0) {
index = 0;
}
}
return str.slice(0, ...
How to get the index of an item in a list in a single step?
How can I find the index of an item in a list without looping through it?
7 Answers
7
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count (non-blank) lines-of-code in bash
... Just habit. I read pipelines from left to right, which means I usually start with cat, then action, action, action, etc. Clearly, the end result is the same.
– Michael Cramer
Sep 24 '08 at 14:06
...
Maven2: Best practice for Enterprise Project (EAR file)
... MemberResourceRESTService.java
| `-- webapp
| |-- index.html
| |-- index.xhtml
| |-- resources
| | |-- css
| | | `-- screen.css
| | `-- gfx
| | |-- banner.png
| | ...
Installing Java on OS X 10.9 (Mavericks)
...Get the JRE dmg on http://www.oracle.com/technetwork/java/javase/downloads/index.html
Install it
In your terminal, type: export JAVA_HOME="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home"
java -version now gives you java version "1.7.0_45"
That's the cleanest way I found to instal...
Git: How to remove file from index without deleting files from any repository
...out (per comment by William Pursell; but remember to re-remove it from the index!):
git checkout @{1} -- foo.conf && git rm --cached foo.conf
If they have taken other actions since pulling your deletion (or they are pulling with rebase into a detached HEAD), they may need something other ...