chapter 12  error handling in apis

... contain any combination of the following options For startup processing: c Trace directive handling during Apache (non-mod_perl) configuration-directive handling d Trace directive handling during ... see: My value is Perl Use of uninitialized value at /warnings.pl line 15 main::print_value( ) called at /warnings.pl line 11 main::incorrect( ) called at /warnings.pl line My value is Take a moment ... value in having the same warning showing up, again and again, triggered by thousands of script invocations If your code isn’t very clean and generates even a single warning per script invocation,...

Ngày tải lên: 24/10/2013, 08:15

... HANDLING EXCEPTIONS • The try Block HANDLING EXCEPTIONS • The catch Block OverflowException DivideByZeroException ArithmeticException FormatException HANDLING EXCEPTIONS HANDLING EXCEPTIONS HANDLING ... HANDLING EXCEPTIONS HANDLING EXCEPTIONS • The throw Statement The throw Statement The throw Statement HANDLING EXCEPTIONS • The finally Block – The finally block contains code that always executes, ... control.) Validating (Occurs when a control is validating.) Validated (Occurs when a control is finished validating.) – LostFocus (Occurs when a control looses focus.) The Validating Event • Inside the...

Ngày tải lên: 13/05/2014, 11:39

Ngày tải lên: 14/12/2013, 12:15

... while in $self-> {in_ block} block" unless $self-> {in_ block} eq $p{block_type}; Another sanity check is in the start_block() method It's always a good thing to make sure that the lexer is giving ... Cache::FileCache; use Digest::SHA1; We solve our subclassing problem with the following code There is nothing wrong with changing a class's inheritance dynamically in Perl, so that's what we The alter_superclass() ... concatenate the two together • A lexer subclass enabling ASP-style syntax • An ApacheHandler subclass that munges incoming strings into Unicode, using the Encode module from CPAN • A CGIHandler subclass...

Ngày tải lên: 21/01/2014, 06:20

... Processing at three layers of ATM causes delay Interleaving cells from different connections Operation and maintenance cell interleaving If using synchronous digital hierarchy frames, these are inserted ... avoidance in opposite direction to packet required Forwards Congestion avoidance in same direction as packet required Categories of Explicit Signaling Binary A bit set in a packet indicates congestion ... Variations in Allowed Cell Rate Cell Flow Rate Control Feedback EFCI (Explicit forward congestion indication) marking Relative rate marking Explicit rate marking Frame Relay Congestion Control Minimize...

Ngày tải lên: 06/03/2014, 09:21

... 21 The Validating event     The Validating event (cont.) In the Validating event, to retain the focus in the current control, forcing the user to fix the problem before proceeding further To ... about invalid data input   Using MessageBox.Show Using ErrorProvider component         BlinkRate BlinkStyle ContainerControl GetError() Icon SetError() SetIconAlignment() SetIconPadding() ... Exception Handling: try…catch finally Exception Handling: try…catch try{ // code that may cause exception } catch ( ExceptionTypeA e ){ // statement to handle errors occurring // in the associated...

Ngày tải lên: 13/05/2014, 11:30

... reactivity with aqueous chlorine 12.2.2 CHEMICAL OXIDATION BY AQUEOUS CHLORINE Aqueous chlorine (HOCl / OCl-) is an important drinking water disinfectant and is used in both drinking water and wastewater ... Pharmaceuticals in the Environment and in Water Treatment Systems chlorine conditions, confirming that the hydrazone side-chain is the reactive site and the quinoxaline N,N´-dioxide and quinoxaline moieties ... pathways and kinetic trends that should be expected for secondary versus tertiary amine-containing fluoroquinolones in reaction with chlorine The ability of fluoroquinolones to inhibit bacterial...

Ngày tải lên: 18/06/2014, 16:20

... aerobic granule (chapter 11) In fact, Toh et al (2003) investigated the viability of microflora residing inside aerobic granules using in situ DNA fluorescence staining, in which membrane permeable ... nonbiodegradable EPS in constructing and maintaining the spatial structure, integrity, and stability of aerobic granules Without doubt, the large fraction of biodegradable EPS in aerobic granules ... the minimum energy required for microbial maintenance functions during cell starvation Biodegradable EPS has been discovered in many forms of bacteria exploited for environmental engineering Zhang...

Ngày tải lên: 18/06/2014, 16:20

... METALS IN THE ENVIRONMENT: USING WETLANDS FOR THEIR REMOVAL Services for Set Up 0.94 0.069 Mine Wastewaters Water Water Flows Nutr Lead Operating Services Zinc Particles Chemical Binding Lead ... treatment were evaluated by estimating flows and storages of emergy in inputs and outputs from the treatment systems as explained briefly in Chapter and applied in Chapter 11 Energy systems diagrams ... concentrations of nutrients, lead, and zinc were estimated for the in ow waters to evaluate their emergy content (Table 12.1) This emergy in ow was mainly retained in the system as biomass and sedimentary...

Ngày tải lên: 18/06/2014, 19:20

... contaminants in drinking water are not a common water quality problem But it is of public concern, and public health officials must screen for the presence of radioactivity in drinking water Drinking ... Implementation In 2000, the New Zealand Ministry of Health published a stringent drinking water standard for radioactive contamination [33] The standard specifies radon concentrations in drinking water ... approved by the Ministry of Health in 1997, effective January 1, 1998, for acceptable levels of 137Cs and 90Sr in food for 16 food groups, including drinking water (AL-97) These are still in force and...

Ngày tải lên: 18/06/2014, 19:20

... Stocks are financial instruments, and financial instruments are measured numerically At some point, then, your stock selection is going to have to include math if it is to be a sound investment ... their investors, rather than being reinvested in the company for such things as expansion or research and development Stocks with low current yields are usually reinvesting their profits, leaving ... available in most newspapers and on the Internet The credit ratings for stock are a little more detailed since they measure substantially more, but most break down into nine categories using combinations...

Ngày tải lên: 01/07/2014, 21:20

... had any interest or motive in demolishing your credit, I could it in ten minutes If I were in the King’s place,” he added, aloud, “I should, in going to M Fouquet, leave my escort behind me I ... now at an end The King drank the wine which was presented to him, and then all resumed their course through the city The King bit his lips in anger; for the evening was closing in, and all hope ... yet very inconsiderable in numbers, should be well officered and well disciplined in its limited proportions The result was that through the captain’s arrangements, the King, on arriving at Melun,...

Ngày tải lên: 03/07/2014, 09:20

... borrowing in Ecuador in local currency (sucre) denominated loans as a natural hedge of the net investments in Ecuador Interface Inc (1999) During 1998, the Company restructured its borrowing facilities ... operating revenues by $782 million ($517 million, after excluding excise taxes) and operating companies income by $46 million during 1999 Declines in operating revenues and operating companies income ... sales declined by 4% in 1999, and that the decline was largely explained by currency depreciation in South America However, explaining the behavior of sales in 1998 is more involved The information...

Ngày tải lên: 05/07/2014, 13:20

... going to the floors It is a nightmare thinking of going to see the patients You are afraid of the risk of infection, diarrhea, urine, vomit, blood It is frightening to think about returning." ... appointed Global AIDS Coordinator notes that there are more Ethiopian physicians practicing in Chicago than in all of Ethiopia? In Zambia, only 50 of the 600 doctors trained since the country's independence ... since the country's independence in 1964 remain in their home country Nor is it surprising that a 1999 survey of medical students in Ghana in their final year of training revealed that 40 of 43 students...

Ngày tải lên: 06/07/2014, 08:20

... messaging : letters, faxes, telephone calls •Business value creation processes : ordering, bookkeeping, inventorying •Auction, bidding, bartering •Remote education, telemedicine, and other interactive ... falling, global interest-based communities will spring up „ Mainly in support of business-to-business financial and other repetitive, standard transactions, e.g EFT & EDI „ The emergence of the Internet ... effectiveness, integration and coordination ƒ Applications ‚ creating a methodology of finding EC business applications ƒ Strategy ‚ designing strategic advantage strategy for EC ‚ initiating “Where...

Ngày tải lên: 31/07/2014, 17:20

... the S-CSCF are in different networks involve traffic exchanges between different security domains Security Domain Security Domain Interdomain traffic SEG SEG Figure 12.19: Inter-domain traffic through ... SEGs are established and maintained using IKEv1 (Internet Key Exchange version 1, specified in RFC 2409 [164]) or IKEv2 (specified in RFC 4306 [197]) Within a security domain, network entities exchange ... domains in called Za Authentication, integrity protection, and encryption are mandatory in the Za interface This offers the inter-domain IMS traffic the maximum degree of protection The Zb interface...

Ngày tải lên: 01/08/2014, 17:21

... Heating contaminated water for cooking or bathing increases the odor intensity with increased vaporization Environmental Behavior and Fate Characterizing groundwater contaminant plumes originating ... contaminants are divided into three lists List 1, including twelve contaminants for which analytical methods are established, includes MTBE Assessment monitoring will be required beginning in 2001 ... used in higher percentages in premium gasoline than in regular gasoline The first ©2001 CRC Press LLC winter oxygenated gasoline program in the nation was implemented in Denver, Colorado in 1988...

Ngày tải lên: 11/08/2014, 06:23

... conditions of relevant indicators with reasoning or calculations The main problems of designing and using such tools lie in minimizing the amount of necessary input data and reducing the © 2002 by ... 2000) They include: • • • • • • Strengthening regional marketing and food processing Enhancing the competitiveness of regional business Improving the social or cultural activities within a region ... heads in the same direction when cropping practices are changed) As can be seen in Figure 12.4, when a reduction in nitrate leaching occurs by switching cropping practices, a relevant reduction in...

Ngày tải lên: 11/08/2014, 10:22

... Destroying VOCs 217 to water vapor, and supporting Pt on a hydrophobic support such as a fluorinated carbon can reduce the inhibiting effect of water, but inhibition is still observed [13] In combination ... catalyst in flowing 4% water/air over the temperature range 100–600°C is shown in Figure The results indicated that even at 600°C no change in the initial U O phase occurred Some thermal broadening ... temperature in the first saturator and then reduced by passing through the second saturator maintained in a thermostatically controlled bath The water concentration was calculated using water vapor...

Ngày tải lên: 11/08/2014, 12:21

... (73) In drinking water purification systems, sand filters containing microbial communities are used to remove potential pathogens by trapping them within the EPS matrix of the biofilm (72) In most instances, ... under laminar flow conditions was ‘‘patchy’’ in that it consisted of rounded clusters of cells up to 100 µm in diameter separated by interstitial voids containing only a thin dispersion of single ... advances in imaging technology, such as confocal scanning laser microscopy (48), realtime image capture (49), and fluorescent staining (41,50,51), our understanding of biofilm structure is increasing...

Ngày tải lên: 11/08/2014, 15:20