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Check if a method exists
...or(someMethod:withParams:)]
This may be useful if you would like to call one constructor or another one depending on this (I mean, before having the instance itself).
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Detach many subdirectories into a new, separate Git repository
...eset -q $GIT_COMMIT -- apps/AAA libs/XXX' --prune-empty -- --all
As mentioned by void.pointer in his/her comment, this will remove everything except apps/AAA and libs/XXX from current repository.
Prune empty merge commits
This leaves behind lots of empty merges. These can be removed by another p...
Select first row in each GROUP BY group?
... If there are multiple purchases with equally the highest total for one customer, the 1st query returns an arbitrary winner (depending on implementations details; the id can change for every execution!). Typically (not always) you would want one row per customer, defined by additional criteri...
Multiple file upload in php
...w this is an old post but some further explanation might be useful for someone trying to upload multiple files... Here is what you need to do:
Input name must be be defined as an array i.e.
name="inputName[]"
Input element must have multiple="multiple" or just multiple
In your PHP file use the syn...
Read a file line by line assigning the value to a variable
... line:
while IFS= read -r line; do
echo "Text read from file: $line"
done < my_filename.txt
This is the standard form for reading lines from a file in a loop. Explanation:
IFS= (or IFS='') prevents leading/trailing whitespace from being trimmed.
-r prevents backslash escapes from being i...
How to add test coverage to a private constructor?
...est otherwise inaccessible code is to achive 100% test coverage so that no one has to look at that class again. If the coverage is stuck at 95% many developers may attempt to figure out the reason for that just to bump into this issue over and over again.
– thisismydesign
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Values of disabled inputs will not be submitted
...value be submitted with the form.
<INPUT disabled name="fred" value="stone">
Note. The only way to modify dynamically the value of the disabled
attribute is through a script.
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Static/Dynamic vs Strong/Weak
... both and actually spells out the difference. What would be nice is if someone could please spell this out clearly here for me and the rest of the world.
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Spring vs EJB. Can Spring replace EJB? [closed]
...B . For me, Spring is able to replace the requirement of using EJB. Can anyone tell me what are the extra advantages of using EJB?
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Download multiple files with a single action
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HTTP does not support more than one file download at once.
There are two solutions:
Open x amount of windows to initiate the file downloads (this would be done with JavaScript)
preferred solution create a script to zip the files
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