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How update the _id of one MongoDB Document?
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answered Oct 25 '10 at 8:41
Niels van der RestNiels v...
Real life example, when to use OUTER / CROSS APPLY in SQL
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edited May 19 '18 at 10:24
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Maven – Always download sources and javadocs
Is there a way I can configure maven to always download sources and javadocs? Specifying -DdownloadSources=true -DdownloadJavadocs=true everytime (which usually goes along with running mvn compile twice because I forgot the first time) becomes rather tedious.
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How to create a CPU spike with a bash command
...ere 4 threads).
Simple enter hit will stop it (just make sure no other dd is running on this user or you kill it too).
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How to set Oracle's Java as the default Java in Ubuntu?
.../jvm/java-7-oracle-[version number here].
The reason it's a symbolic link is that in case there's a new version of the JVM, you don't need to update your .bashrc file, it should automatically point to the new version.
If you want to set JAVA_HOME environment variables globally and at system level ...
Mapping many-to-many association table with extra column(s)
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Since the SERVICE_USER table is not a pure join table, but has additional functional fields (blocked), you must map it as an entity, and decompose the many to many association between User and Service into two OneToMany associations : One User has many U...
Check if a string contains an element from a list (of strings)
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With LINQ, and using C# (I don't know VB much these days):
bool b = listOfStrings.Any(s=>myString.Contains(s));
or (shorter and more efficient, but arguably less clear):
bool b = listOfStrings.Any(myString.Contains);
If you were testing equality, it would be worth looking at HashSet et...
How to communicate between iframe and the parent site?
The website in the iframe isn't located in the same domain , but both are mine, and I would like to communicate between the iframe and the parent site. Is it possible?
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gdb: how to print the current line or find the current line number?
list commands prints a set of lines, but I need one single line, where I am and where an error has probably occurred.
5 An...
Calculate the center point of multiple latitude/longitude coordinate pairs
...at/long pair into a unit-length 3D vector.
Sum each of those vectors
Normalise the resulting vector
Convert back to spherical coordinates
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