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Should I use string.isEmpty() or “”.equals(string)?
I'm usually testing this alongside a string == null , so I'm not really concerned about a null-safe test. Which should I use?
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What is the Swift equivalent of respondsToSelector?
...r:, even if Swift, if you are dealing with NSObject instances:
@interface TestA : NSObject
- (void)someMethod;
@end
@implementation TestA
//this triggers a warning
@end
var a = TestA()
if a.respondsToSelector("someMethod") {
a.someMethod()
}
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Regex for string contains?
...s the regex for simply checking if a string contains a certain word (e.g. 'Test')? I've done some googling but can't get a straight example of such a regex. This is for a build script but has no bearing to any particular programming language.
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No identities are available for signing Xcode 5
... try to distribute my app as Ad-hoc, it successfully create and install on test device an IPA file. But when I try validate my app or submit to AppStore, all the time I have an error. Maybe someone can help me with this issue.
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Use '=' or LIKE to compare strings in SQL?
... you can and LIKE wherever you must.
SELECT * FROM user WHERE login LIKE 'Test%';
Sample matches:
TestUser1
TestUser2
TestU
Test
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How to check if a String contains another String in a case insensitive manner in Java?
...ki/Gro%C3%9Fes_%C3%9F. On German keyboards, type Shift + Alt Gr + ß -> test: ẞ ????
– Kawu
Nov 23 '19 at 13:12
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How to verify if a file exists in a batch file?
...ace. After deleting the folder, it will restore those three files.
xcopy "test" "C:\temp"
xcopy "test2" "C:\temp"
del C:\myprogram\sync\
xcopy "C:\temp" "test"
xcopy "C:\temp" "test2"
del "c:\temp"
Use the XCOPY command:
xcopy "C:\myprogram\html\data.sql" /c /d /h /e /i /y "C:\myprogram\sync\"...
Test if a variable is a list or tuple
In python, what's the best way to test if a variable contains a list or a tuple? (ie. a collection)
13 Answers
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Why do I get “'property cannot be assigned” when sending an SMTP email?
...entials = false;
client.Host = "smtp.gmail.com";
mail.Subject = "this is a test email.";
mail.Body = "this is my test email body";
client.Send(mail);
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Can I use git diff on untracked files?
...ince I really only use it interactively, I'm OK with a hack:
d() {
if test "$#" = 0; then
(
git diff --color
git ls-files --others --exclude-standard |
while read -r i; do git diff --color -- /dev/null "$i"; done
) | `git config --get core...