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What is a “symbol” in Julia?
... read those answers, it seems that the reason a symbol is different than a string is that strings are mutable while symbols are immutable, and symbols are also "interned" – whatever that means. Strings do happen to be mutable in Ruby and Lisp, but they aren't in Julia, and that difference is actu...
Determine if an element has a CSS class with jQuery
...e);
or
$(selector).hasClass(className);
The argument is (obviously) a string representing the class you are checking, and it returns a boolean (so it doesn't support chaining like most jQuery methods).
Note: If you pass a className argument that contains whitespace, it will be matched literall...
How do I delete a Git branch locally and remotely?
...al remote-tracking branches through git fetch -p, you can avoid making the extra network operation by just manually removing the branch(es) with the --remote or -r flags:
git branch --delete --remotes origin/X
git branch -dr origin/X # Shorter
See Also
git-branch(1) Manual Page.
git-fetch(1) Ma...
Extracting an attribute value with beautifulsoup
... Would you mind if I edit this to follow PEP 8 and use the more modern string formatting methods?
– AMC
Mar 9 at 19:35
...
How can I launch Safari from an iPhone app?
...
should be the following :
NSURL *url = [NSURL URLWithString:@"http://www.stackoverflow.com"];
if (![[UIApplication sharedApplication] openURL:url]) {
NSLog(@"%@%@",@"Failed to open url:",[url description]);
}
...
What is the equivalent of “!=” in Excel VBA?
...
Just a note. If you want to compare a string with "" ,in your case, use
If LEN(str) > 0 Then
or even just
If LEN(str) Then
instead.
share
|
improve ...
SQL Call Stored Procedure for each Row without using a cursor
...
@WeihuiGuo because Code built dynamically using strings is HORRIBLY prone to failure and a total pain in the butt to debug. You should absolutely never do anything like this outside of a one off that has no chance of becoming a routine part of a production environment
...
How do I get and set Environment variables in C#?
...s 'C:\Windows\system32'. To get the un-expanded path, I had to use this:
string keyName = @"SYSTEM\CurrentControlSet\Control\Session Manager\Environment\";
string existingPathFolderVariable = (string)Registry.LocalMachine.OpenSubKey(keyName).GetValue("PATH", "", RegistryValueOptions.DoNotExpandEnv...
How do I put double quotes in a string in vba?
... I prefer creating a global variable: Public Const vbDoubleQuote As String = """" 'represents 1 double quote (") Public Const vbSingleQuote As String = "'" 'represents 1 single quote (') and using it like so: Shell "explorer.exe " & vbDoubleQuote & sPath & vbDoubleQuote, ...
Does PowerShell support constants?
...datatype when using Set-Variable? When dealing with variables one may use [string]$name = value but that seems not to be possible for constants?
– masi
Dec 1 '12 at 23:32
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