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What is the email subject length limit?
...255 is probably the most common (and more efficient) data column length in MySQL / MariaDB. Bytes are most certainly still relevant. MySQL will use 1 byte to store the length if it is less than 256, or more otherwise. Take a look at how C++ implements std::string if you think string lengths aren'...
Oracle: If Table Exists
...pts for an Oracle database, and was hoping Oracle had something similar to MySQL's IF EXISTS construct.
15 Answers
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How to specify id when uses include in layout xml file
...nd any other attributes you've set on the include tag) gets applied on the root tag of the included layout instead. So your activity.getView(R.id.included1) should in fact be the <TextView> itself.
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Server.MapPath(“.”), Server.MapPath(“~”), Server.MapPath(@“\”), ...
... the parent directory
Server.MapPath("~") returns the physical path to the root of the application
Server.MapPath("/") returns the physical path to the root of the domain name (is not necessarily the same as the root of the application)
An example:
Let's say you pointed a web site application (ht...
Placeholder Mixin SCSS/CSS
...n be written like so to work both nested and unnested:
@mixin optional-at-root($sel) {
@at-root #{if(not &, $sel, selector-append(&, $sel))} {
@content;
}
}
@mixin placeholder {
@include optional-at-root('::-webkit-input-placeholder') {
@content;
}
@include optional-at-r...
Convert a Git folder to a submodule retrospectively?
...ven though I have tested this successfully)!
0. Preparation
Variables
# Root directory where repo-org lives
# and a temporary location for git filter-branch
root="$PWD"
temp='/dev/shm/tmp'
# The old repository and the subdirectory we'd like to extract
repo_old="$root/repo-old"
repo_old_directory...
Rails 3 datatypes?
...t by using :limit option with :integer. I have tested it on Rails 3 and MySQL, they are still working, just as said in the blog, they are signed integer.
– RacsO
Dec 18 '13 at 3:23
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How can I include a YAML file inside another?
...custom constructors (such as !include) to the YAML loader. I've included a root directory that can be set so that this solution supports relative and absolute file references.
Class-Based Solution
Here is a class-based solution, that avoids the global root variable of my original response.
See th...
Conditionally start at different places in storyboard from AppDelegate
...l load the storyboard and set its initial view controller as your window's root view controller before it sends application:didFinishLaunchingWithOptions: to your AppDelegate.
I also assume that the initial view controller in your storyboard is the navigation controller, onto which you want to push...
Should I choose ActivePerl or Strawberry Perl for Windows? [duplicate]
....15.
I think I dropped Strawberry Perl after trying to install DBI + DBD::mysql on Windows 7 (which is a no brainer in ActivePerl; just click on the ppms and choose install).
But maybe that's solved by now. And maybe one can choose the directory where Strawberry Perl gets installed (I couldn't).
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