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Best Articles — Page 2

Why is the empty dictionary a dangerous default value in Python?

python
mutable-defaults
function-calls
defensive-programming

Why is String.chars() a stream of ints in Java 8?

java
stream-api
performance-optimization
primitive-types

Why is SQL server throwing this error: Cannot insert the value NULL into column 'id'?

sql
identity-specification
auto-increment
primary-key-constraint

Why is my .data() function returning [ instead of the first value of my array?

javascript
json-parsing
jquery-data
javascript-best-practices

Why is Maven downloading the maven-metadata.xml every time?

java
maven-metadata
maven-settings
maven-plugins

Why is immutability so important (or needed) in JavaScript?

javascript
immutability
const
pure-functions

Why Is `Export Default Const` Invalid?

javascript
export-default
named-exports
javascript-modules

Why is exception.printStackTrace() considered bad practice?

java
logging-best-practices
exception-handling
thread-safety

Why is Double.MIN_VALUE not negative?

java
floating-point-arithmetic
java-8
precision

Why is (a*b != 0) faster than (a != 0 && b != 0) in Java?

java
branch-prediction
performance-optimization
jvm-optimizations

Why explicitly throw a NullPointerException rather than letting it happen naturally?

java
best-practices
debugging
exception-handling

Why do you create a View in a database?

sql
data-manipulation
database-design
performance-optimization

Why do Java programmers like to name a variable "clazz"?

java
conventions
best-practices
readability

Why do I need 'b' to encode a string with Base64?

python
base64-encoding
unicode-strings
bytes-literals

Why do I get AttributeError: 'NoneType' object has no attribute 'something'?

python
attributeerror
error-handling
best-practices

Why does "pip install" inside Python raise a SyntaxError?

python
pip-install
python-interpretter
subprocess-module

Why doesn't "System.out.println" work in Android?

java
logging
android-logging
logcat

Why doesn't String switch statement support a null case?

java
null-safety
switch-statement
java-21

Why doesn't Python have a sign function?

python
custom-functions
edge-cases
math-standards

Why doesn't indexOf work on an array IE8?

javascript
polyfills
ie8-compatibility
javascript-features
explain.codes