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Calling Java varargs method with single null argument?
...rity method invocation. If no applicable method is found during this phase then processing continues to the second phase.
This guarantees that any calls that were valid in the Java programming language before Java SE 5.0 are not considered ambiguous as the result of the introduction of variable...
Parse JSON in JavaScript? [duplicate]
...
It's not necessary to check for native support first and then fall back to jQuery. jQuery 1.10 tries JSON.parse first, then the own implementation. jQuery 2.x is directly calling JSON.parse without checking or fallback.
– Jasha
Nov 4 '13 at 1...
Set transparent background using ImageMagick and commandline prompt
... the background color. I just flood fill the background with transparency, then select the alpha channel and blur it and remove half of the blurred area using -level 50x100%. Then turn back on all the channels and flatten it against the brown color. The -blur 0x1 -level 50x100% acts to antialias th...
Take a full page screenshot with Firefox on the command-line
... Just FYI you can also select DOM notes through the inspector and then right-click -> screenshot node. This is super helpful when you want to screenshot a section of a page.
– Tom
Jan 21 '16 at 22:43
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Django optional url parameters
... The problem with nested is if you have multiple optional parameters, then you end up not being DRY, since with, for example, 3 optional parameters, you have 8 different combinations of possible URLs. You have to handle parameter 1 occurring, parameter 1 not occurring but parameter 2 occurring...
How to install the current version of Go in Ubuntu Precise
...web/gvm/master/binscripts/gvm-installer')
. "$HOME/.gvm/scripts/gvm"
and then it's as easy as doing this:
gvm install go1.1.1
gvm use go1.1.1 --default
The default flag at the end of the second command will set go1.1.1 to be your default Go version whenever you start a new terminal session.
...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
...fy the array within the method / function, a copy of it is made first, and then only the copy is modified. This makes it seem as if the array is passed by value when in actual fact it isn't.
For example, in this first case, even though you aren't defining your function to accept $my_array by refere...
WPF: Setting the Width (and Height) as a Percentage Value
...s rather more cunning. Add a ViewBox where you want relative sizes inside, then inside that, add a Grid at width 100. Then if you add a TextBlock with width 10 inside that, it is obviously 10% of 100.
The ViewBox will scale the Grid a
Member initialization while using delegated constructor
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Tokenizer::Tokenizer(std::stringstream *lines)
: lines(lines)
{
}
and then define the default constructor using delegation:
Tokenizer::Tokenizer()
: Tokenizer(nullptr)
{
}
As a general rule, you should fully specify that version of the constructor that takes the largest number of arguments...
How can one print a size_t variable portably using the printf family?
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@Yttrill: What's the answer for 64-bit windows, then?
– John Bode
Dec 16 '15 at 12:28
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