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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:
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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...
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.
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How do I lowercase a string in C?
...ype.h>
for(int i = 0; str[i]; i++){
str[i] = tolower(str[i]);
}
or if you prefer one liners, then you can use this one by J.F. Sebastian:
for ( ; *p; ++p) *p = tolower(*p);
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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...
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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AngularJS : Difference between the $observe and $watch methods
...$scope changes in AngularJS. But couldn't understand what exactly is the difference between the two.
4 Answers
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How to construct a relative path in Java from two absolute paths (or URLs)?
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Yep, it only works if the base path is a parent of the first path. If you need some hierarchical backward like "../../relativepath", it won't work. I found a solution: mrpmorris.blogspot.com/2007/05/…
– Aurelien Ribon
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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?
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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...