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Why does Lua have no “continue” statement?
... a=1 --change outer a
end
local a=f() -- inner a
until a==0 -- test inner a
The declaration of local a inside the loop body masks the outer variable named a, and the scope of that local extends across the condition of the until statement so the condition is testing the innermost a.
If...
Java array reflection: isArray vs. instanceof
...
In most cases, you should use the instanceof operator to test whether an object is an array.
Generally, you test an object's type before downcasting to a particular type which is known at compile time. For example, perhaps you wrote some code that can work with a Integer[] or an i...
Is the primary key automatically indexed in MySQL?
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I guess this is the answer
mysql> create table test(id int primary key, s varchar(20));
Query OK, 0 rows affected (0.06 sec)
mysql> show indexes from test \G
*************************** 1. row ***************************
Table: test
Non_unique: 0
Key_n...
Check if a string has white space
...hasWhiteSpace(s) {
return s.indexOf(' ') >= 0;
}
Or you can use the test method, on a simple RegEx:
function hasWhiteSpace(s) {
return /\s/g.test(s);
}
This will also check for other white space characters like Tab.
...
Regular Expression to find a string included between two characters while EXCLUDING the delimiters
...rk if the substring also contains the delimiters? For example in This is a test string [more [or] less] would this return more [or] less ?
– gnzlbg
Feb 22 '13 at 18:49
1
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Assign variable in if condition statement, good practice or not? [closed]
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The last example doesn't work, however, if you're testing for fail/success of a function that returns a boolean. In other words, while if (resultArr = myNeedle.exec(myHaystack)) {...} works, if ((resultArr = myNeedle.exec(myHaystack)) === true) {...} does not because the as...
Hudson or Teamcity for continuous integration? [closed]
...changed. You can commit from the IDE to the CI server, run the comile and tests on the build grid, and then the CI server will commit if the build is successful. You can click on build reports in the CI web app and it will open the appropriate files in the IDE.
There are plugins available (I wrot...
pdf2htmlEX实现pdf转html - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...在dos环境下的调用命名：
D:\\pdf2htmlEX-v1.0\\pdf2htmlEX.exe d:\\test" "2 D:\\test" "1\\v1.pdf [v3.html]
D:\\pdf2htmlEX-v1.0\\pdf2htmlEX.exe表示exe文件路径。后面的空格不能少
d:\\test" "2表示转换之后的html存放位置，这里的" "为空格，dos环境下，所有...
Android: install .apk programmatically [duplicate]
...file = new File(destination);
if (file.exists())
//file.delete() - test this, I think sometimes it doesnt work
file.delete();
//get url of app on server
String url = Main.this.getString(R.string.update_app_url);
//set downloadmanager
DownloadManager.Request request ...
Java Pass Method as Parameter
...7 and earlier...
Take a look at the command pattern.
// NOTE: code not tested, but I believe this is valid java...
public class CommandExample
{
public interface Command
{
public void execute(Object data);
}
public class PrintCommand implements Command
{
p...