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The presence on physical exam of jaundice associated with abdominal tenderness, hepatomegaly (splenomegaly may also be present), and lymphadenopathy, particularly in a child of school age, should arouse suspicion of viral hepatitis (commonly hepatitis A).

Abdominal trauma should be considered when abdominal pain is out or proportion to physical exam findings. Signs of accidental (e.g., seatbelt mark suggesting a motor vehicle accident) and nonaccidental injury (particularly if history is suspicious) should be sought (e.g., cigarette burns, subdural hemorrhages in an infant/young toddler). Blood at the urethral meatus, or hematuria, may suggest urinary tract or kidney injury.

If clinical findings are minimal and the child appears well, a diagnosis of functional abdominal pain should be considered. Diagnostic criteria for functional abdominal pain are symptom based, not physical exam or laboratory based. [27] Drossman DA, Chang L, Chey WD, et al. Rome IV: functional gastrointestinal disorders, disorders of gut-brain interaction. 4th ed. Raleigh, NC: Rome Foundation; 2017.

Infants and toddlers

In a neonate, the triad of abdominal distension, delayed passage of meconium (not occurring in the first 36 hours of life), and vomiting is highly suggestive of Hirschsprung disease. Necrotizing enterocolotis should be considered in a premature neonate weighing less than 1500 g. Early signs may include inability to tolerate feeds, abdominal distension and tenderness, blood in the stool, and abdominal wall erythema. In severe cases, systemic signs of sepsis may be present. A neonate presenting with bilious vomiting, with (partial obstruction) or without (complete obstruction) the passage of meconium, is highly suggestive of small bowel obstruction. Causes such as meconium ileus, intestinal atresia, and midgut volvulus should be excluded with further investigations.

Meckel diverticulum should be considered in a child <2 years old with abdominal tenderness (Meckel diverticulitis); hematochezia, typically dark red, maroon, or "red currant jelly" stools (indicates intestinal bleeding as they contain heterotopic gastric tissue); or signs of obstruction such as nausea, vomiting, and obstipation (intussusception, volvulus, or herniation can result).

Reproductive age

Ectopic pregnancy and miscarriage should be suspected in any female of reproductive age presenting with lower abdominal pain, amenorrhea, and vaginal bleeding. Pelvic exam may reveal a mass, eliciting cervical motion tenderness if hemoperitoneum is present; tubal rupture can cause hemodynamic instability. Clinical features of a ruptured ovarian cyst usually occur prior to the expected time of ovulation and may mimic ectopic pregnancy. Pain arises from local peritonitis secondary to hemorrhage. [18] Katz VL. Benign gynecologic lesions: vulva, vagina, cervix, uterus, oviduct, ovary. In: Katz VL, Lentz GM, Lobo RA, et al., eds. Comprehensive gynecology. Philadelphia: Mosby; 2007: Chap. 18. [19] Boyle KJ, Torrealday S. Benign gynecologic conditions. Surg Clin North Am. 2008;88:245-264. [20] Schultz KA, Ness KK, Nagarajan R, et al. Adnexal masses in infancy and childhood. Clin Obstet Gynecol. 2006;49:464-479. Peritonism may be present in lower abdomen and pelvis; adnexal size is unremarkable due to collapsed cyst. The presence of a tender pelvic mass associated with nausea and vomiting may suggest ovarian torsion. In addition, in patients old enough to undergo pelvic exam, cervical motion tenderness may be elicited; typically no vaginal discharge is present, but there may be some mild to moderate vaginal bleeding.

'My name is ' componentFactory

Angular modules and ComponentFactoryResolver

Although AngularJS also had modules it lacked true namespaces for directives. There was always a potential for conflicts and no way to encapsulate utility directives inside a particular module. Luckily, Angular learnt its lessons and now provides proper namespacing for declarative types: directives, components and pipes.

Just as in AngularJS every component in the newer framework is part of some module. Components don’t exist by themselves and if you want to use a component from a different module you have to import that module:

In turn, if a module wants to provide some components to be used by other module components it has to export these components. Here is how does that:

So each component is bound to a particular module and you can’t declare the same component in different modules. If you do that you’ll get an error:

When Angular compiles an application, it takes components that are defined in of a module or found in components templates and generates component factories for them. You can see those factories in the tab:

In previous section we identified that if we had an access to a component factory we could then use it to create a component and insert into a view. Each module provides a convenient service for all its components to get a component factory. This service is ComponentFactoryResolver . So, if you define a on the module and want to get a hold of its factory you can use this service from a component belonging to this module:

This only works if both components are defined in the same module or if a module with a resolved component factory is imported.

exports: [COMMON_DIRECTIVES, ...],

Dynamic module loading and compilation

But what if your components are defined on the other module that you don’t want to load until the components in it are actually required? We can do that. This will be something similar to what router is doing with configuration option.

There are two options how to load a module during runtime. The first one is to use the SystemJsNgModuleLoader provided by Angular. It is used by the router to load child routes if you’re using SystemJS as a loader. It has one public method , which loads a module to a browser and compile the module and all components declared in it. This method takes a path to a file with a module and export name and returns ModuleFactory :

If you don’t specify export name, the loader will use the export name. The other thing to note is that requires a DI setup with some injections so you should define it as a provider like that:

You can of course specify any token for , but the router module uses so it’s probably a good thing to use the same approach.

So, the here is the full code to load a module and get a component factory:

But there is a one problem with using . Under the hood it uses compileModuleAsync method of the compiler. This method creates factories only for components declared in of a module or found in components templates. But what if you don’t want to declare your components as entry components? There is a solution — load the module yourself and use compileModuleAndAllComponentsAsync method. It generates factories for all components on the module and returns them as an instance of :

Here is the full code that shows how to load a module yourself and get access to all component factories:

Keep in mind that this approach makes use of a compiler which is not supported as a Public API. Here is what Slip Jog Jumpsuit in Black size L also in MSXSXXS Norma Kamali Good Selling Cheap Price s0bAW


Notice that vectors are distinct from one-dimensional arrays in that the latter have dim and dimnames attributes (both of length one). One-dimensional arrays are not easily obtained from subsetting operations but they can be constructed explicitly and are returned by table . This is sometimes useful because the elements of the dimnames list may themselves be named, which is not the case for the names attribute.

Some operations such as m[FALSE, ] result in structures in which a dimension has zero extent. R generally tries to handle these structures sensibly.

Next: Subset assignment , Previous: Indexing matrices and arrays , Up: Indexing [ Discount Manchester Villette jacquard tassel dress Altuzarra Professional Sale Perfect R6uIDIvVK
][ Index ]

The operator [ is a generic function which allows class methods to be added, and the $ and [[ operators likewise. Thus, it is possible to have user-defined indexing operations for any structure. Such a function, say [.foo is called with a set of arguments of which the first is the structure being indexed and the rest are the indices. In the case of $ , the index argument is of mode "symbol" even when using the x$"abc" form. It is important to be aware that class methods do not necessarily behave in the same way as the basic methods, for example with respect to partial matching.

The most important example of a class method for [ is that used for data frames. It is not described in detail here (see the help page for [.data.frame ), but in broad terms, if two indices are supplied (even if one is empty) it creates matrix-like indexing for a structure that is basically a list of vectors of the same length. If a single index is supplied, it is interpreted as indexing the list of columns—in that case the drop argument is ignored, with a warning.

The basic operators $ and [[ can be applied to environments. Only character indices are allowed and no partial matching is done.

Previous: Indexing other structures , Up: Indexing [ Contents ][ Index ]

Assignment to subsets of a structure is a special case of a general mechanism for complex assignment:

The result of this command is as if the following had been executed

Note that the index is first converted to a numeric index and then the elements are replaced sequentially along the numeric index, as if a for loop had been used. Any existing variable called `*tmp*` will be overwritten and deleted, and this variable name should not be used in code.

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