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HtmlSpecialChars equivalent in Javascript?
... is a better alternative than writing your own function if your strings to convert are not too large.
Aborting a shell script if any command returns a non-zero value?
...r part of an && or || list.
See the bash(1) man page on the "set" internal command for more details.
I personally start almost all shell scripts with "set -e". It's really annoying to have a script stubbornly continue when something fails in the middle and breaks assumptions for the rest ...
How can a Java variable be different from itself?
...Float.NaN:
float x = Float.NaN; // <--
if (x == x) {
System.out.println("Ok");
} else {
System.out.println("Not ok");
}
Not ok
You can do the same with Double.NaN.
From JLS §15.21.1. Numerical Equality Operators == and !=:
Floating-point equality testing is performed in accordance...
How to write a simple database engine [closed]
...
assume you have a table, with some data, we would create a data format to convert this table into a binary file, by agreeing on the definition of a column delimiter and a row delimiter and make sure such pattern of delimiter is never used in your data itself. i.e. if you have selected <*> for...
Looping over arrays, printing both index and value
... space separated list of words is not an array. Wrap it like so (a b c) to convert it to an array.
– Breedly
Aug 19 '16 at 18:59
...
Replace non-ASCII characters with a single space
...t'll pass over the values twice), and a generator expression will first be converted to one. Giving it a list comprehension is simply faster. See this post.
– Martijn Pieters♦
Nov 19 '13 at 18:42
...
What is data oriented design?
...ted Approach
In OOP you would describe balls like this:
class Ball {
Point position;
Color color;
double radius;
void draw();
};
And then you would create a collection of balls like this:
vector<Ball> balls;
Data Oriented Approach
In Data Oriented Design, however, you are mo...
Creating a dictionary from a csv file?
...
You have to just convert csv.reader to dict:
~ >> cat > 1.csv
key1, value1
key2, value2
key2, value22
key3, value3
~ >> cat > d.py
import csv
with open('1.csv') as f:
d = dict(filter(None, csv.reader(f)))
print(d)
~ ...
“where 1=1” statement [duplicate]
... SQL Injection possible. The security issue would be to use $cond (without converting it to an integer) to specify the minimum age in the query, and to check if isset($_REQUEST['cond']) is actually true (otherwise using 1 = 1).
– Arseni Mourzenko
Nov 16 '11 at ...
How does RegexOptions.Compiled work?
...the regular expression engine to compile the regular expression expression into IL using lightweight code generation (LCG). This compilation happens during the construction of the object and heavily slows it down. In turn, matches using the regular expression are faster.
If you do not specify this ...