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NSDictionary - Need to check whether dictionary contains key-value pair or not
...ing app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSSingleObjectArrayI objectForKey:]: unrecognized selector sent to instance 0x60000133a1c0'
– Amr Angry
Jan 11 '19 at 16:20
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Test or check if sheet exists
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You don't need error handling in order to accomplish this. All you have to do is iterate over all of the Worksheets and check if the specified name exists:
For i = 1 To Worksheets.Count
If Worksheets(i).Name = "MySheet" Then
exists = True
En...
How to resize a VirtualBox vmdk file
...he symlink path VBoxManage clonehd "~/path/to/symlink/packer-centos-6.5-x86_64-disk1.vmdk" "/media/k0pernikus/thatFatSlowDisk/cloned_packer-centos-6.5-x86_64-disk1.vdi" If you specfiy the real path, the command will crash due to VBoxManage: error: Cannot register the hard disk, as VBox thinks it's a...
https URL with token parameter : how secure is it?
...Actually, with the kind of key space we're talking about, putting a if(this_ip_number_has_requested_an_invalid_token_today()) sleep(5); in your load_simulation script would be perfectly sufficient protection. (Rate limiting is one of those features of good authentication mechanisms.)
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What is meant with “const” at end of function declaration? [duplicate]
...parenthesis.
const is a highly overused qualifier in C++: the syntax and ordering is often not straightforward in combination with pointers. Some readings about const correctness and the const keyword:
Const correctness
The C++ 'const' Declaration: Why & How
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Using CSS for a fade-in effect on page load
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Use rvmrc or ruby-version file to set a project gemset with RVM?
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Unknown Column In Where Clause
...s is used
as the expression's column name and
can be used in GROUP BY, ORDER BY, or
HAVING clauses."
(...)
It is not permissible to refer to a column alias in a WHERE clause,
because the column value might not yet be determined when the WHERE
clause is executed. See Section B.5.4.4, ...
Get decimal portion of a number with JavaScript
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In order to work with negative number, simply swap Math.floor with Math.trunc.
– Igor Silva
Oct 19 '18 at 12:49
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How to change Vagrant 'default' machine name?
...onfigure('2') do |config|
config.vm.box = "precise64"
config.vm.box_url = "http://files.vagrantup.com/precise64.box"
end
VirtualBox GUI Name: "nametest_default_1386347922"
Comments: The name defaults to the format DIRECTORY_default_TIMESTAMP.
Define VM
Vagrant.configure('2') do |config...