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How can I get a precise time, for example in milliseconds in Objective-C?
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127
NSDate and the timeIntervalSince* methods will return a NSTimeInterval which is a double with s...
Warning as error - How to rid these
...errors that basically should not be halting my compile in Visual Studio 2010 and should not be show stoppers, or at least I will fix them later, but I don't want the compile to just error and halt on these kinds of problems.
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Can I convert long to int?
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218
Just do (int)myLongValue. It'll do exactly what you want (discarding MSBs and taking LSBs) in ...
MYSQL import data from csv using LOAD DATA INFILE
I am importing some data of 20000 rows from a CSV file into Mysql.
11 Answers
11
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Can two different strings generate the same MD5 hash code?
...t you should worry about. Considering the birthday paradox, given a set of 2^64 (or 18,446,744,073,709,551,616) assets, the probability of a single MD5 collision within this set is 50%. At this scale, you'd probably beat Google in terms of storage capacity.
However, because the MD5 hash function ha...
How to Apply Corner Radius to LinearLayout
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280
You can create an XML file in the drawable folder. Call it, for example, shape.xml
In shape.x...
ggplot2 keep unused levels barplot
...ed to set drop=FALSE on both scales (fill and x) like this:
library(ggplot2)
df <- data.frame(type=c("A", "A", "A", "B", "B"), group=rep("group1", 5))
df1 <- data.frame(type=c("A", "A", "A", "B", "B", "A", "A", "C", "B", "B"), group=c(rep("group1", 5),rep("group2", 5)))
df$type <- factor(d...
Overriding fields or properties in subclasses
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Fields by themselves cannot be overridden. Which is exactly why Option 2 returns the new keyword warning.
The solution to the warning is not to append the “new” keyword, but to implement Option 1.
If you need your field to be polymorphic you need to wrap it in a Property.
Option 3 is O...
Resize fields in Django Admin
... CharField, also 6 or 8 chars wide, and then the edit box goes up to 15 or 20 chars.
14 Answers
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Programmatically get height of navigation bar
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259
Do something like this ?
NSLog(@"Navframe Height=%f",
self.navigationController.n...