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Checking for a null int value from a Java ResultSet
...r your iVal declaration. In which case your test is completely redundant.
If you actually want to do something different if the field value is NULL, I suggest:
int iVal = 0;
ResultSet rs = magicallyAppearingStmt.executeQuery(query);
if (rs.next()) {
iVal = rs.getInt("ID_PARENT");
if (rs.wa...
StringUtils.isBlank() vs String.isEmpty()
...haracter (or that the string is empty or that it's null). This is totally different than just checking if the string is empty.
From the linked documentation:
Checks if a String is whitespace, empty ("") or null.
StringUtils.isBlank(null) = true
StringUtils.isBlank("") = true
...
How do I return early from a rake task?
I have a rake task where I do some checks at the beginning, if one of the checks fails I would like to return early from the rake task, I don't want to execute any of the remaining code.
...
Remove a HTML tag but keep the innerHtml
...airly slow compared to .replacewith() because of the extra DOM traversal...if it's a <b> tag with only HTML it gets even faster.
– Nick Craver♦
Nov 20 '10 at 13:51
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Usage of protocols as array types and function parameters in swift
...otocol. The objects should be stored in a typed array. According to the Swift documentation protocols can be used as types:
...
Sort objects in ArrayList by date?
...ou don't want to change your model, like when you want to sort on several different properties. In that case, you can create comparator on the fly:
Collections.sort(myList, new Comparator<MyObject>() {
public int compare(MyObject o1, MyObject o2) {
return o1.getDateTime().compareTo(o2...
Empty set literal?
...
By all means, please use set() to create an empty set.
But, if you want to impress people, tell them that you can create an empty set using literals and * with Python >= 3.5 (see PEP 448) by doing:
>>> s = {*()} # or {*{}} or {*[]}
>>> print(s)
set()
this is b...
Contains method for a slice
...nd mkb gave you a hint to use the binary search from the sort package. But if you are going to do a lot of such contains checks, you might also consider using a map instead.
It's trivial to check if a specific map key exists by using the value, ok := yourmap[key] idiom. Since you aren't interested ...
Check for array not empty: any?
Is it bad to check if an array is not empty by using any? method?
6 Answers
6
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How to convert an integer to a string in any base?
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If you need compatibility with ancient versions of Python, you can either use gmpy (which does include a fast, completely general int-to-string conversion function, and can be built for such ancient versions -- you may need t...