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Progra<em>mem><em>mem>atically saving i<em>mem>age to Django I<em>mem>ageField
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I have so<em>mem>e code that fetches an i<em>mem>age off the web and stores it in a <em>mem>odel. The i<em>mem>portant bits are:
fro<em>mem> django.core.files i<em>mem>port File # you need this so<em>mem>ewhere
i<em>mem>port urllib
# The following actually resides in a <em>mem>ethod of <em>mem>y <em>mem>o...
How to use @Nullable and @Nonnull annotations <em>mem>ore effectively?
...er errors.
As said in the "Clean Code" book, you should check your public <em>mem>ethod's para<em>mem>eters and also avoid checking invariants.
Another good tip is never returning null values, but using Null Object Pattern instead.
shar...
How can I list all foreign keys referencing a given table in SQL Server?
I need to re<em>mem>ove a highly referenced table in a SQL Server database. How can I get a list of all the foreign key constraints I will need to re<em>mem>ove in order to drop the table?
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How to use the IEqualityCo<em>mem>parer
I have so<em>mem>e bells in <em>mem>y database with the sa<em>mem>e nu<em>mem>ber. I want to get all of the<em>mem> without duplication. I created a co<em>mem>pare class to do this work, but the execution of the function causes a big delay fro<em>mem> the function without distinct, fro<em>mem> 0.6 sec to 3.2 sec!
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Can so<em>mem>eone explain <em>mem>appedBy in JPA and Hibernate?
I a<em>mem> new to hibernate and need to use one-to-<em>mem>any and <em>mem>any-to-one relations. It is a bi-directional relationship in <em>mem>y objects, so that I can traverse fro<em>mem> either direction. <em>mem>appedBy is the reco<em>mem><em>mem>ended way to go about it, however, I couldn't understand it. Can so<em>mem>eone explain:
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Why does changing the returned variable in a finally block not change the return value?
I have a si<em>mem>ple Java class as shown below:
7 Answers
7
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Dictionary returning a default value if the key does not exist [duplicate]
I find <em>mem>yself using the current pattern quite often in <em>mem>y code nowadays
4 Answers
4
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Create Windows service fro<em>mem> executable
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To create a Windows Service fro<em>mem> an executable, you can use sc.exe:
sc.exe create &a<em>mem>p;lt;new_service_na<em>mem>e&a<em>mem>p;gt; binPath= "&a<em>mem>p;lt;path_to_the_service_executable&a<em>mem>p;gt;"
You <em>mem>ust have quotation <em>mem>arks around the actual exe path, and a space after the binPath=.
<em>Mem>ore ...
Core du<em>mem>ped, but core file is not in the current directory?
While running a C progra<em>mem>, It says "(core du<em>mem>ped)" but I can't see any files under the current path.
12 Answers
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PHP Pass by reference in foreach [duplicate]
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Because on the second loop, $v is still a reference to the last array ite<em>mem>, so it's overwritten each ti<em>mem>e.
You can see it like that:
$a = array ('zero','one','two', 'three');
foreach ($a as &a<em>mem>p;a<em>mem>p;$v) {
}
foreach ($a as $v) {
echo $v.'-'.$a[3].PHP_EOL;
}
As you can see, the last array ite<em>mem> ...