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What are some better ways to avoid the do-while(0); hack in C++?
...is considered acceptable practice to isolate these decisions in a function and use returns instead of breaks. While all these checks correspond to the same level of abstraction as of the function, it is quite logical approach.
For example:
void foo(...)
{
if (!condition)
{
return;
}...
Conda: Installing / upgrading directly from github
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It's still calling pip under the covers, but you can now unify your conda and pip package specifications in a single environment.yml file.
If you wanted to update your root environment with this file, you would need to save this to a file (for example, environment.yml), then run the command: conda...
jQuery UI DatePicker - Change Date Format
I am using the UI DatePicker from jQuery UI as the stand alone picker. I have this code:
28 Answers
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List of MSBuild built-in variables
...MSBuild reserved properties
Common MSBuild properties
Macros for Build Commands and Properties
Other useful lists:
Well-known item metadata
MSBuild special characters
First link shows the MSBuild property for project name:
MSBuildProjectName The file name of the project file without the fi...
ios Upload Image and Text using HTTP POST
...forKey:[NSString stringWithString:@"title"]];
// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];
// string constant for the post parameter 'file'. M...
How to remove a file from version control without deleting it?
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You want the --keep-local command-line option. This removes the file from version control without removing it from your filesystem.
$ svn rm --keep-local my_important_file
Note: The --keep-local only affects the svn rm of your copy. Other users may hav...
To find whether a column exists in data frame or not
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Assuming that the name of your data frame is dat and that your column name to check is "d", you can use the %in% operator:
if("d" %in% colnames(dat))
{
cat("Yep, it's in there!\n");
}
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undefined reference to `__android_log_print'
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Try the following in your Android.mk file:
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -llog
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Convert javascript array to string
I'm trying to iterate over a "value" list and convert it into a string. Here is the code:
14 Answers
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How to check if string input is a number? [duplicate]
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Simply try converting it to an int and then bailing out if it doesn't work.
try:
val = int(userInput)
except ValueError:
print("That's not an int!")
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