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PHP string “contains” [duplicate]
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if (strpos($str, '.') !== FALSE)
{
echo 'Found it';
}
else
{
echo 'Not found.';
}
Note that you need to compare with the !== operator. If you use != or <> and the '.' is found at position 0, hey! 0 compares equal to FALSE and you lose. This will cause you to poin...
Force the origin to start at 0
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xlim and ylim don't cut it here. You need to use expand_limits, scale_x_continuous, and scale_y_continuous. Try:
df <- data.frame(x = 1:5, y = 1:5)
p <- ggplot(df, aes(x, y)) + geom_point()
p <- p + expand_limits(x = 0, y = 0)
p # not what...
Tool to compare directories (Windows 7) [closed]
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I use WinMerge. It is free and works pretty well (works for files and directories).
share
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improve this answer
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f...
Java string split with “.” (dot) [duplicate]
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You need to escape the dot if you want to split on a literal dot:
String extensionRemoved = filename.split("\\.")[0];
Otherwise you are splitting on the regex ., which means "any character".
Note the double backslash needed to create a single backslash in the regex.
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Java Long primitive type maximum limit [duplicate]
I am using the Long primitive type which increments by 1 whenever my 'generateNumber'method called. What happens if Long reaches to his maximum limit? will throw any exception or will reset to minimum value?
here is my sample code:
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matplotlib: colorbars and its text labels
...rs import ListedColormap
#discrete color scheme
cMap = ListedColormap(['white', 'green', 'blue','red'])
#data
np.random.seed(42)
data = np.random.rand(4, 4)
fig, ax = plt.subplots()
heatmap = ax.pcolor(data, cmap=cMap)
#legend
cbar = plt.colorbar(heatmap)
cbar.ax.get_yaxis().set_ticks([])
for j,...
Tool for sending multipart/form-data request [closed]
...rsion
Make sure you check the comment from @maxkoryukov
Be careful with explicit Content-Type header. Better - do not set it's
value, the Postman is smart enough to fill this header for you. BUT,
if you want to set the Content-Type: multipart/form-data - do not
forget about boundary fie...
How to set IntelliJ IDEA Project SDK
I just installed IntelliJ IDEA and when I try to create my first Project it asks for me to set up the Project SDK. When I click on "JDK" it asks for me to select the home directory of the JDK as shown in this image.
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C++ convert from 1 char to string? [closed]
I need to cast only 1 char to string . The opposite way is pretty simple like str[0] .
2 Answers
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How can I get the current date and time in the terminal and set a custom command in the terminal for
...YYMMDDHHMMSS, 20160804020100 use the command this way: date +%Y%m%d%H%M%S. It servers most purposes like file backup, or log filtering.
– computingfreak
Nov 30 '16 at 3:19
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