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What's the best way to check if a String represents an integer in Java?
...ncerned with potential overflow problems this function will perform about 20-30 times faster than using Integer.parseInt().
public static boolean isInteger(String str) {
if (str == null) {
return false;
}
int length = str.length();
if (length == 0) {
return false;
...
How to return an array from JNI to Java?
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120
If you've examined the documentation and still have questions that should be part of your initia...
UITableView load more when scrolling to bottom like Facebook application
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103
You can do that by adding a check on where you're at in the cellForRowAtIndexPath: method. This...
Mixed mode assembly is built against version ‘v2.0.50727′ of the runtime
...yV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
<requiredRuntime version="v4.0.20506" />
</startup>
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imp...
How do I use arrays in C++?
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305
Arrays on the type level
An array type is denoted as T[n] where T is the element type and n is...
How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
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How can I count the number of matches for a regex?
... following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
String hel...
How to get execution time in rails console?
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edited Jul 20 '19 at 4:28
Jeremy Baker
3,04833 gold badges2121 silver badges2525 bronze badges
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Is there XNOR (Logical biconditional) operator in C#?
...te also that this doesn't generalize to bitwise operations, where you want 0x1234 XNOR 0x5678 == 0xFFFFBBB3 (assuming 32 bits). For that, you need to build up from other operations, like ~(A^B). (Note: ~, not !.)
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Controlling maven final name of jar artifact
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303
You set the finalName property in the plugin configuration section:
<plugin>
<gro...