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What is the difference between a static and a non-static initialization code block
...nside Static Initializer.");
// fruits array
ArrayList<String> fruits = new ArrayList<>();
fruits.add("Apple");
fruits.add("Orange");
fruits.add("Pear");
// print fruits
for (String fruit : fruits) {
System.out.println...
string sanitizer for filename
I'm looking for a php function that will sanitize a string and make it ready to use for a filename. Anyone know of a handy one?
...
C/C++ line number
...andard. During preprocessing, they are replaced respectively by a constant string holding an integer representing the current line number and by the current file name.
Others preprocessor variables :
__func__ : function name (this is part of C99, not all C++ compilers support it)
__DATE__ : a str...
How do I trigger the success callback on a model.save()?
...you don't pass the model when calling save. the first argument of save is extra attributes that you can set before calling save. It'd be like calling model.set(model.toJSON()); model.save(). there's no reason to set a model to what the model is set to.. it's the epitome of redundant to pass a mod...
How to do ToString for a possibly null object?
...# 6.0 we can now have a succinct, cast-free version of the orignal method:
string s = myObj?.ToString() ?? "";
Or even using interpolation:
string s = $"{myObj}";
Original Answer:
string s = (myObj ?? String.Empty).ToString();
or
string s = (myObjc ?? "").ToString()
to be even more concise.
Unfo...
SQL Switch/Case in 'where' clause
... @selectedValue varchar (50)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT
drugstock_drugname.n_cur_bal,drugname.cdrugname,clinic.cclinicname
FROM drugstock_drugname
INNER JOIN drugname ON drugstock_drugname.dr...
Number of days between two dates in Joda-Time
...o achieve the behavior of android.text.format.DateUtils.getRelativeTimeSpanString() with joda and this was really useful.
– gosho_ot_pochivka
Jun 27 '13 at 10:28
1
...
Capturing Groups From a Grep RegEx
... name="${BASH_REMATCH[1]}"
echo "${name}.jpg" # concatenate strings
name="${name}.jpg" # same thing stored in a variable
else
echo "$f doesn't match" >&2 # this could get noisy if there are a lot of non-matching files
fi
done
It's better to put the ...
Why is this program erroneously rejected by three C++ compilers?
...Image.open('helloworld.png') # Open image object using PIL
print image_to_string(image) # Run tesseract.exe on image
To use it, do:
python script.py > helloworld.cpp; g++ helloworld.cpp
share
...
How can I get the named parameters from a URL using Flask?
...
Use request.args to get parsed contents of query string:
from flask import request
@app.route(...)
def login():
username = request.args.get('username')
password = request.args.get('password')
...