Loop in a loop
Hello!
How do you feel is it ok to use a loop in a loop in a web application?
for (Iterator i = collection1.iterator(); i.hasNext();) {
for (Iterator l = collection2.iterator(); l.hasNext();) {
collection3.add(l.next());
}
Hello!
How do you feel is it ok to use a loop in a loop in a web application?Sure, why not? A loop in the body of another loop is fine ...
> for (Iterator i = collection1.iterator(); i.hasNext();) {
for (Iterator l = collection2.iterator(); l.hasNext();) {
collection3.add(l.next());
}But in this particular case you can rewrite the above as:for (Iterator i= collection1.iterator(); i.hasNext(); )
collection3.addAll(collection2);kind regards,
Jos
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I know the install completed successfully - it said so, anyway.
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Hello friends,
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Herok wrote:
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For j in (select a, (select 1 from dual),c ) loop ..end loop;...... error
declare
begin
for cur in (select (select 1 from dual) col from dual)
loop
null;
end loop;
end;in TOAD, OK, BUT IN FORM ERROR!
Edited by: indoracle on Feb 23, 2012 2:38 AM
Edited by: indoracle on Feb 23, 2012 2:40 AMA couple of things.
First, please take a few minutes to review the following:
<ul>
<li>Oracle Forums FAQ
<li>Before posting on this forum please read
<li>10 Commandments for the OTN Forums Member
<li>How to ask questions the smart way
</ul>
Following these simple guidelines will ensure you have a positive experience in any forum; not just this one! ;-)
Using the formating information in the Oracle Forms FAQ, it is always recommended that you put your code samples in the ... tags (use lower case "code") so your code is more readable.
Second, the use of all capital letters is concidered YELLING. I'm sure you did not intend to YELL at anyone, so please only use capital letters when they are needed, not for everything. :)
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Forth, your FOR LOOP doesn't do anything!
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Craig... -
Dear experts,
Please find the code below.This is text variable customer exit.Can u ple help me to put these multiple loops into one loop.Do u suggest this code is ok?
Appreciate your help.
WHEN 'ZSTXTPE01AA'or 'ZSTXT0FISCPER305AA'or 'ZSTXT0FISCYEAR01AA'
INCLUDE Z_VARIABLES_TEXT
DATA: vtype i,
fisper i,
fisyear i
IF I_STEP=2.
LOOP AT I_T_VAR_RANGE INTO loc_var_range WHERE VNAM='ZS0VTYPE01AA'
vtype=LOC_VAR_RANGE-LOW
ENDLOOP.
CLEAR L_S_RANGE.
L_S_RANGE-LOW= vtype.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
LOOP AT I_T_VAR_RANGE INTO loc_var_range WHERE VNAM='ZS0FISCPER305AA'
fisper=LOC_VAR_RANGE-LOW
ENDLOOP.
CLEAR L_S_RANGE.
L_S_RANGE-LOW= fisper.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
LOOP AT I_T_VAR_RANGE INTO loc_var_range WHERE VNAM='ZS0FISCYEAR01AB'
fisyear=LOC_VAR_RANGE-LOW
ENDLOOP.
CLEAR L_S_RANGE.
L_S_RANGE-LOW= fisyear.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
APPEND L_S_RANGE TO E_T_RANGE.
ENDIF.
Rgds
ACELOOP AT I_T_VAR_RANGE INTO loc_var_range
WHERE VNAM IN('ZS0VTYPE01AA', 'ZS0FISCPER305AA','ZS0FISCYEAR01AB')
vtype=LOC_VAR_RANGE-LOW.
endloop.
L_S_RANGE-LOW= vtype.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
L_S_RANGE-LOW= fisper.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
L_S_RANGE-LOW= fisyear.
L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
APPEND L_S_RANGE TO E_T_RANGE.
try the above code
also
What u r doing inside ur loop endloop? -
Multiple loops in one loop for text variables
Dear experts,
Please find the code below.This is text variable customer exit.Can u ple help me to put these multiple loops into one loop.Do u suggest this code is ok?
Appreciate your help.
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L_S_RANGE-OPT = 'EQ'.
LOOP AT I_T_VAR_RANGE INTO loc_var_range WHERE VNAM='ZS0FISCYEAR01AB'
fisyear=LOC_VAR_RANGE-LOW
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L_S_RANGE-SIGN = 'I'.
L_S_RANGE-OPT = 'EQ'.
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Rgds
ACEHi ACE BW,
You can try to use the SELECT statement and then include the LOOP inside it.
Thanks,
Daniel -
How to avoid the loop inside the loop? as it reduces the performance.
hi masters,
i have 2 internal tables having 1 same field. eg table itab having f1, f2, f3 fields and itab1 having f1, f4 and f5 fields. let us consider the data in the itab and itab1 is like below given
itab-f1 itab-f2 itab-f3 itab1-f1 itab1-f4 itab1-f5
10 aa 11 10 abc 456
10 bb 15 10 def 655
10 ff 13 10 ghi 456
11 dd 16 10 tre 455
11 zz 24 11 ftr 256
11 ii 54 11 kjh 556
12 hh 24 12 fjk 751
now i want the result in final table like below
f1 f2 f3 f4 f5
10 aa 11 abc 456
10 aa 11 def 655
10 aa 11 ghi 456
10 aa 11 tre 455
10 bb 15 abc 456
10 bb 15 def 655
10 bb 15 ghi 456
10 bb 15 tre 455
10 ff 13 abc 456
10 ff 13 def 655
10 ff 13 ghi 456
10 ff 13 tre 455
11 dd 16 ftr 256
11 dd 16 kjh 556
11 zz 24 ftr 256
11 zz 24 kjh 556
11 ii 54 ftr 256
11 ii 54 kjh 556
12 hh 24 fjk 751
i can get this result using the
Loop at itab.
loop at itab1 where f1 = itab-f1.
process....
endloop.
endloop.
but it is very slow. i want to avoid this loop inside the loop and i want to implement the same program using read table.. like below..
Loop at itab.
Read table itab1 with key ....
process...
endloop.
Is it possible? to get multiple records from itab2 using read statement or with READ statement that using CASE Statement or IF statemetnt.
Plz help me...hi,
please try the following code
TYPES:
begin of ty_itab2,
f1
f2
f3
f4
f5
end of ty_itab2.
DATA:
lw_tab2tmp type ty_itab2,
lt_tab2tmp type standard table of ty_itab2.
sort it_itab by f1.
loop at it_itab into lw_itab.
at new f1.
CLEAR lt_tab2tmp[].
loop at it_itab1 into lw_itab1 where f1 = lw_itab-f1.
CLEAR lw_tab2tmp.
move-corresponding lw_itab1 to lw_tab2tmp.
append lw_tab2tmp into lt_tab2tmp.
end loop.
"while there is no data with f1 in it_itab1
if lt_tab2tmp is initial.
lw_tab2tmp-f1 = lw_itab-f1.
append lw_tab2tmp into lt_tab2tmp.
endif.
end at.
CLEAR lw_tab2tmp.
MOVE-CORRESPONDING lw_itab to lw_tab2tmp.
modify lt_tab2tmp from lw_tab2tmp TRANSPORTING f2 f3 where not f1 is initial.
append lines of lt_tab2tmp into lt_itab2.
end loop.
lt_itab2 is the final table.
There may be some syntactically errors.
I have not a system to test it now, please test it. -
Change a non-looping track to looping
I'm using STP 2.0.2
I also just started reading Apple Pro Training Series 'Soundtrack Pro' by Mary Plummer.
It seems my interface is not the same as what she shows in the book. Doesn't state what version STP it's referencing.
Questions and confusion so far are:
1. I can't find anywhere a way to change a non-looping track to looping. It's not in the clip drop-down or when I right-click the clip in the timeline.
2. I can't find the format button (it's not on the top tools bar next to the sample rate selector). I can only change beats/time-based from the Multitrack drop-down.That book is from 2006. I'm sure it's version 1. You should update to v3 anyway. It's being more stable, especially under Snow Leopard.
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Need help w/ for loop, a do loop, and a do-while loop.
Hello I have been trying to write a program that uses a for, do, and a do-while loop, but I am having trouble. I need the program that will prompt the user to enter two numbers. The first number must be less than the second number. I need to use a "for loop", a "do loop", and a "do-while loop" to display the odd numbers between the first number and the second number. For example, if the user entered 1 and 8, the program would display 3,5,7 three different times (one for each of the loops). Please help if you can. Thanks.
boolean2009 wrote:
Thank all of you all for responding.Youre welcome.
Yes this is my homework, but my major does not even involve java i just have to take the class.Not our problem.
And yes we are suppose to have all three in one program I do not know why,So you can learn all three types of loops (there is also an enhanced for loop to learn later on).
but I just do not understand programming nor do i really want to.Once again not our problem.
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FPGA - Synchronization between two loops with different loop rates.
Hi all,
I am trying to implement an Analog and Quadrature Decoder. Simply put, I have two loops: LOOP 1 with an Analog Input (AI) which is a slower loop rate. Another loop: LOOP 2 has a digital input (input) and counts the Quadrature counts. I understand that Analog conversion is slower, and as a result, LOOP 1 will have a slower higher tick rate. I want to pass the "counts" from LOOP 2 into LOOP1, so that I can synchronize the Analog Input with the number of quadrature counts. My issue at hand is: since LOOP 2 updates at a higher rate. Will the "counts" value that I pass/tunnel from LOOP 2 to LOOP 1 refresh at the LOOP 2's rate or at LOOP 1's rate.
Thanks,
Herrick Changhlchang wrote:
Hi all,
I am trying to implement an Analog and Quadrature Decoder. Simply put, I have two loops: LOOP 1 with an Analog Input (AI) which is a slower loop rate. Another loop: LOOP 2 has a digital input (input) and counts the Quadrature counts. I understand that Analog conversion is slower, and as a result, LOOP 1 will have a slower higher tick rate. I want to pass the "counts" from LOOP 2 into LOOP1, so that I can synchronize the Analog Input with the number of quadrature counts. My issue at hand is: since LOOP 2 updates at a higher rate. Will the "counts" value that I pass/tunnel from LOOP 2 to LOOP 1 refresh at the LOOP 2's rate or at LOOP 1's rate.
Thanks,
Herrick Chang
The only way to pass values between two parallel loops is by some sort of global variable (global or locals are fine, as are shared variables although I wouldn't recommend that for FPGA if you don't want to go outside of the FPGA target at all). Don't tunnel anything between two independant loops as they won't be independant anymore.
The local variable will be updated at the rate the writing loop updates it, though your slower read loop will obviously not see every value. Note that the FPGA compiler will protect the local variable access in both loops in order to avoid race conditions. This protection is necessary but expensive in terms of runtime performance of each loop as well as FPGA gate usage.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions
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