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emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?
... circular structures. See the docs for Read Syntax for Circular Objects.
And then you have its use for denoting the base for integers, e.g. #x2c -> 44.
Plus more I'm sure.
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How may I align text to the left and text to the right in the same line?
How can I align text so that some of it aligns to the left and some of it aligns to the right within the same line?
9 Answe...
Why is lazy evaluation useful?
... You can actually emulate an infinite list in Python using generators and generator expressions (which work in a similar way to a list comprehension): python.org/doc/2.5.2/ref/genexpr.html
– John Montgomery
Nov 5 '08 at 15:11
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Checking for a null int value from a Java ResultSet
...) {
iVal = rs.getInt("ID_PARENT");
if (rs.wasNull()) {
// handle NULL field value
}
}
(Edited as @martin comments below; the OP code as written would not compile because iVal is not initialised)
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How to write binary data to stdout in python 3?
...ike using shutil.copyfileobj even when the source file object gives bytes, and not strings. +1
– csl
Jun 19 '15 at 14:45
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Computed / calculated / virtual / derived columns in PostgreSQL
... Postgres 11 generated columns are not supported - as defined in the SQL standard and implemented by some RDBMS including DB2, MySQL and Oracle. Nor the similar "computed columns" of SQL Server.
STORED generated columns are introduced with Postgres 12. Trivial example:
CREATE TABLE tbl (
int1 ...
How to lock compiled Java classes to prevent decompilation?
... also scramble your code flow in a way that makes it really hard to follow and works as an excellent code optimizer...
Also many of the obfuscators are also able to scramble your string constants and remove unused code.
Another possible solution (not necessarily excluding the obfuscation) is to us...
Java Byte Array to String to Byte Array
I'm trying to understand a byte[] to string, string representation of byte[] to byte[] conversion... I convert my byte[] to a string to send, I then expect my web service (written in python) to echo the data straight back to the client.
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How to retrieve the hash for the current commit in Git?
...rev-parse --short HEAD
Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref and git for-each-ref.
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iOS: How does one animate to new autolayout constraint (height)
...ith autolayout constraints before. I have a small new app I'm working on and noticed that the NIB's views are defaulting to autolayout. So, I figured I'd take the opportunity to work with it and try to figure out where Apple is going with this.
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