You can also specify expressions using the logical and , or , not ,? The div operator returns the integer result of division. This can be useful when a variable is bound to a sub-routine or object method which you want to call but aren't interested in the value returned.
The SET directive allows you to assign new values to existing variables or create new temporary variables. Variables may be assigned the values of other variables, unquoted numbers 2. In the latter case, any variable references within the text will be interpolated when the string is evaluated. Multiple variables may be assigned in the same directive and are evaluated in the order specified.
Thus, the above could have been written:. In Perl 5, the. Note that the operator must be specified with surrounding whitespace which, as Larry says, is construed as a feature:.
You can, of course, achieve a similar effect with double quoted string interpolation. This can be particularly useful in common template components to ensure that some sensible default are provided for otherwise undefined variables. No attempt to parse or process the file is made. The contents, possibly including any embedded template directives, are inserted intact. Absolute i. Both these options are disabled by default. For convenience, the filename does not need to be quoted as long as it contains only alphanumeric characters, underscores, dots or forward slashes.
Names containing any other characters should be quoted. All files should be unquoted names or quoted strings. Any variables should be interpolated into double-quoted strings. If a BLOCK of the specified name is defined in the same file, or in a file from which the current template has been called i.
Any template directives embedded within the file will be processed accordingly. All variables currently defined will be visible and accessible from within the included template. Local variable definitions may be specified after the template name, temporarily masking any existing variables.
Insignificant whitespace is ignored within directives so you can add variable definitions on the same line, the next line or split across several line with comments interspersed, if you prefer. Any changes made within the included template will not affect variables in the including template. Technical Note: the localisation of the stash that is, the process by which variables are copied before an INCLUDE to prevent being overwritten is only skin deep. The top-level variable namespace hash is copied, but no attempt is made to perform a deep-copy of other structures hashes, arrays, objects, etc.
Therefore, a foo variable referencing a hash will be copied to create a new foo variable but which points to the same hash array. Thus, if you update compound variables e.
If you're not worried about preserving variable values, or you trust the templates you're including then you might prefer to use the PROCESS directive which is faster by virtue of not performing any localisation.
However, be aware that because of the localisation issues explained above if you skipped the previous Technical Note above then you might want to go back and read it or skip this section too , the variables might not actually be "local". If the first element of the variable name already references a hash array then the variable update will affect the original variable. This behaviour can be a little unpredictable and may well be improved upon in a future version.
If you know what you're doing with it and you're sure that the variables in question are defined nor not as you expect them to be, then you can rely on this feature to implement some powerful "global" data sharing techniques. Otherwise, you might prefer to steer well clear and always pass simple undotted variables as parameters to INCLUDE and other similar directives. The variable stash is localised once and then the templates specified are processed in order, all within that same variable context.
This makes it slightly faster than specifying several separate INCLUDE directives because you only clone the variable stash once instead of n times , but not quite as "safe" because any variable changes in the first file will be visible in the second, third and so on. This might be what you want, of course, but then again, it might not. Any changes made to variables within the included template will be visible in the including template. It's not unusual to find yourself adding common headers and footers to pages or sub-sections within a page.
Something like this:. The individual template components being included might look like these:. It encloses a block up to a matching END directive, which is first processed to generate some output.
The specification order indicates outermost to innermost wrapper templates. For example, given the following template block definitions:. A BLOCK definition can be used before it is defined, as long as the definition resides in the same file. The block definition itself does not generate any output. Like a named block, it can contain any other template directives which are processed when the block is defined. The output generated by the block is then assigned to the variable julius.
The enclosing block is processed each time the macro is called. Conditions may be arbitrarily complex and are evaluated with the same precedence as in Perl.
Parenthesis may be used to explicitly determine evaluation order. Each CASE directive should contain a single value or a list of values which should match. Ask yourself: How do I start building an Implementation Toolkit from start to finish for my specific project? Answer: Follow the steps below and you'll be on your way to developing your own implementation toolkit.
STEP 1 Investigate by asking yourself and your colleagues if any materials are already available that can be used to integrate into an Implementation Toolkit. STEP 2 If the information is not readily available, assemble and construct background and contextual information about the concern you are addressing.
You are now beginning to construct the Definitional Tools section of an Implementation Toolkit. STEP 3 Assemble and construct Engagement and Communication Tools that can be used in your county or organization to introduce a new initiative, program, or intervention to staff and other stakeholders. In fact, it was specifically created to allow web designers and developers to concentrate on generating web pages without getting bogged down in programming matters.
We call this a "Clear Separation of Concerns" and it makes the whole processes of building, updating and maintaining a web site or web application significantly easier.
This web site contains the complete documentation for the Template Toolkit. TT2 Home Page. Identify the root cause s of the problem you're trying to solve. A quick poll of collaborators to reveal preferences and opinions.
A way of using different perspectives to help generate fresh ideas. Use peer-to-peer coaching to discover everyday solutions and get advice immediately through a series of quick round-robin consultations.
Determine the best way to involve each project stakeholder. A collaborative visual process for better product discovery and prioritization. Unite customer and employee experiences through this journey map to identify and prioritize areas of focus. This Kanban-style framework helps you track the progress of your work and focus on your current goals.
Get to know your remote teammates by taking a peek into their working world. A healthy competition in the form of an obstacle run to warm-up the atmosphere!
Organize your ideas into a structured diagram to see an overview of the concept, understand its complexities and connections, and make decisions effectively. Analyze strengths, weaknesses, opportunities and threats associated with your project.
Determine your best ideas by ranking their feasibility and impact. Efficient and productive prototyping with the whole team. Gather user feedback about your solution, or learn more about a problem.
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