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Multiline comment in PowerShell
...
The multiline comment in PowerShell should work.
If not, try this...
# This is
# a
# multiline comment.
or
<#
This does works for me.
#>
If it doesn't work, try to check if you have the correct version of PowerShell.
...
What is the purpose of “!” and “?” at the end of method names?
...e#sort! sorts it in place.
In Rails, ActiveRecord::Base#save returns false if saving failed, while ActiveRecord::Base#save! raises an exception.
Kernel::exit causes a script to exit, while Kernel::exit! does so immediately, bypassing any exit handlers.
Methods ending in ? return a boolean, which ma...
How to force NSLocalizedString to use a specific language
...ge of the iPhone.
Is it possible to force NSLocalizedString to use a specific language to have the app
in a different language than the device ?
...
How do I enter RGB values into Interface Builder?
...en choose "RGB Sliders" from the drop-down list.
You can also use the magnifying-glass as a color picker to pick up an exact color from anywhere on the screen; also see @ken's excellent comment below clarifying how colorspaces work with the magnifying glass.
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Replace multiple characters in one replace call
...
You could also use a character class:
str.replace(/[#_]/g,'');
Fiddle
If you want to replace the hash with one thing and the underscore with another, then you will just have to chain. However, you could add a prototype:
String.prototype.allReplace = function(obj) {
var retStr = this;
f...
Unable to cast object of type 'System.DBNull' to type 'System.String`
...
EDIT: Haven't paid attention to ExecuteScalar. It does really return null if the field is absent in the return result. So use instead:
return (accountNumber == null) ? string.Empty : accountNumber.ToString()
share
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How to access a preexisting collection with Mongoose?
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Mongoose added the ability to specify the collection name under the schema, or as the third argument when declaring the model. Otherwise it will use the pluralized version given by the name you map to the model.
Try something like the following, either schem...
If isset $_POST
I have a form on one page that submits to another page. There, it checks if the input mail is filled. If so then do something and if it is not filled, do something else. I don't understand why it always says that it is set, even if I send an empty form. What is missing or wrong?
...
How do you remove a Cookie in a Java Servlet
..., HttpServletResponse resp) {
Cookie[] cookies = req.getCookies();
if (cookies != null)
for (Cookie cookie : cookies) {
cookie.setValue("");
cookie.setPath("/");
cookie.setMaxAge(0);
resp.addCookie(cookie);
}
}
...
How do I limit the number of results returned from grep?
...UM, --max-count=NUM
Stop reading a file after NUM matching lines. If the input is
standard input from a regular file, and NUM matching lines are
output, grep ensures that the standard input is positioned to
just after the last matching line before exiting, re...